Tottenham have been warned that the impending expiration of Antonio Conte's contract could also see them lose Harry Kane and Son Heung-Min.
Conte's deal is up at the end of the current campaign, with no sign yet that the Italian will extend his stay in north London. Spurs have improved under his management, with the club well-placed to secure Champions League football for a second successive year.
Recent games have been disappointing though, with Spurs losing to Manchester United and Newcastle in their last two outings. As a result of that poor run, there are now concerns that Conte's management style could affect Spurs after his possible departure in the summer.