Mauricio Pochettino says Barcelona or another club could "steal" Harry Kane from Tottenham.
Kane has been linked with Barca, who are reportedly seeking a long-term successor for Luis Suarez, despite signing a six-year contract before the World Cup, where he won the Golden Boot in England's run to the semi-finals.
Barca head coach Ernesto Valverde described Kane as "exceptional" ahead of Tuesday's Champions League meeting between the clubs at Camp Nou.
Kane has shown little public interest in leaving Spurs but Pochettino noted Premier League stars including Philippe Coutinho and Cristiano Ronaldo have previously been tempted to Spain.
"We have seen that many teams, both in LaLiga and the Premier League, have the economic capacity to steal a star from an important team," Pochettino told a news conference.
"It has happened in the past. Real Madrid signed Cristiano from Manchester United, Coutinho was taken off Liverpool. It has happened in different ways and it will happen in the future, I'm sure.
"But that does not only depend on the economic side, it also depends on the player's aspirations, sometimes they make decisions on facts, certain decisions force players to make decisions at times."
Spurs have also been linked with a move for Barca's rising star Riqui Puig, but Pochettino was unwilling to reveal if the 19-year-old midfielder is a target.
"I don't like to talk about rumours," he said. "Puig, I don't talk about youth players, there is no benefit, it's customary not to talk about these things."
Valverde told his pre-match news conference Suarez would not play, the former Liverpool striker having made a goalscoring return from a knee injury in a 4-0 LaLiga derby win at Espanyol on Saturday.
Suarez was later named in Barca's squad, along with other stars including Lionel Messi, although Valverde indicated he could take the chance to rest players with top spot in Group B already guaranteed.
"We play against Barcelona - I'm not focused on the starting 11," continued Pochettino, whose side must at least match Inter's result against PSV to advance.
"When you play for Barcelona there is always pressure to win - you play for something special. It's the same when you player for Tottenham, the names are not important.
"When you play Barcelona, the quality they have in the squad is amazing, different names have different qualities to add to the team, but they will be strong, they will try to beat us and for different reasons they will play for each other - it's not my business.
"For us, it should be the same motivation, approach, thinking to deliver our best job and try to win, that's how we need to approach the game."
Of Suarez's absence, he added: "Obviously it's an important miss for Barcelona. He's one of the best strikers in the world, together with Harry Kane. It's a shame he won't be playing.
"Suarez has proven in different countries, especially with Liverpool in England and at Barcelona, that he's one of the best strikers nowadays. Obviously, it is important - Barcelona are going to miss him."
21 de enero 2019
|England job ´a privileged postion´, says Southgate|
|Emery has confidence in Arsenal outcast Ozil|
|Zverev destroys racquet in Aus Open meltdown|
|From Villarreal to Aus Open quarters – Bautista Agut breaks major duck|
|Brees: I plan on being here next year and making another run at it|
|´Unf******-believable bro!´ - Brady stunned after reaching third straight Super Bowl|
|New England find answers, penalty costs Kansas City – three takeaways from Patriots´ win over Chiefs|
|Donald Trump congratulates Brady and Super Bowl-bound Patriots|
|Rose helps Timberwolves down Suns|
|Brady leads Patriots into third straight Super Bowl|
|Osaka overcomes Sevastova to reach quarters|
|Chelsea remain behind Sarri – David Luiz|
|McVay explains Gurley´s limited role in Rams´ win over Saints|
|Southgate hails ´tremendous talent´ Rashford|
|Long earns maiden PGA Tour win at Desert Classic|
|Flanagan resigns as Sharks head coach|
|Rams´ Robey-Coleman admits he committed penalty on controversial no-call|
|NFL admits they blew the call – Saints coach Payton|
|Terrible no-call, Goff shines – three takeaways from Rams´ win over Saints|
|Lonzo Ball to miss 4-6 weeks with ankle sprain|
|Patterson added to Australia Test squad|
|Zuerlein´s overtime kick sinks Saints and sends Rams to Super Bowl|
|It was a clear goal – Valverde dismisses Barca VAR controversy|
|Rashford can emulate Man United greats Ronaldo and Rooney – Solskjaer|
|Karmichael Hunt swaps Reds for Waratahs|
|Barcelona forward Dembele set for tests on sprained ankle|
20 de enero 2019
|Neymar insists Barcelona and Real Madrid links not ´concrete´|
|England trio Nowell, Slade and Cowan-Dickie sign fresh Exeter deals|
|Windies coach Pybus not distracted by detractors|
|Barcelona 3 Leganes 1: Messi and Suarez combine to spare Barca´s blushes|
|I´m sure Michael would be extremely proud - Vettel hails Mick Schumacher|
|Young plays down injury fears for England trio Launchbury, Shields and Hughes|
|Pochettino: Lucas Moura fit for Chelsea clash|
|Ranieri positive on Fulham survival chances despite ´unbelievable´ Spurs loss|
|United Arab Emirates v Kyrgyzstan: Zaccheroni confident in attack|
|South Korea lose Ki to hamstring injury|
|It doesn´t look great - Pochettino to wait on Alli assessment|
|Messi benched as Barcelona face Leganes|
|Dalglish texts me before matches - Van Dijk|
|Patrick Mahomes could sign NFL´s first $200m contract - reports|
|Iran 2 Oman 0: Jahanbakhsh and Dejagah secure last-eight spot|
|Helloooo u remember me? Nkoudou reminds Spurs fans he exists|
|Japan v Saudi Arabia: Pizzi believes Saudis can upset the odds|
|Repsol Honda´s Lorenzo to have surgery on fractured wrist|
|Fulham 1 Tottenham 2: Winks heads late winner after Alli injury|
|Leinster seal home quarter-final with win over Wasps|
|Vince, Curran star as Sixers trounce Heat to move second|
|Sharapova stunned by Barty as Kvitova takes Anisimova to school|
|Guardiola demands improvement after Man City win|
|Sexton has bat phone to referees - Jones|
|Alonso accepts Chelsea guilty of ´silly mistakes´ in Arsenal defeat|
|Guardiola woke us up - Sane reveals half-time rocket for Man City|
|A first step to something bigger - Tsitsipas eyeing glory after shocking Federer|
|Thailand 1 China 2: Gao Lin keeps dream alive for Lippi|
|Tsitsipas in dreamland after ousting Federer, birthday boy Tiafoe breaks new ground|
|Huddersfield Town 0 Manchester City 3: Danilo, Sterling and Sane on target for ton-up City|
|Allegri: Khedira will be like a new signing for Juventus|
|Manchester City reach 100 goals in 2018-19|
|Australia v Uzbekistan: Leckie´s return is ´like a new signing´, says Arnold|
|Jordan 1 Vietnam 1 (aet, 2-4 on penalties): Keeper Van Lam the shoot-out hero|
|Federer confirms French Open return after Melbourne exit|
|I accept his decision - Gattuso axes Chelsea-bound Higuain|
|The rapid rise of Federer-conqueror Tsitsipas|
|Gracious Federer hails ´better player´ Tsitsipas after Australian Open exit|
|Tsitsipas ´happiest man on earth´ after stunning Federer|
|Harden focused on wins, not personal feats after scoring 48 points|
|PSG midfielder Verratti suffers sprained ankle|
|Inspired Tsitsipas dethrones Federer|
|PSG´s Cavani considering career finale in Uruguay|
|Feisty Collins ready to make more noise after thrashing Kerber|