Chelsea are lining up Joe Hart as a possible replacement for keeper Thibaut Courtois, The Sun claim.
It comes amid ongoing speculation that Thibaut could be targeted by Real Madrid this summer.
The Sun claim Chelsea want to sign England international Hart from Manchester City at the end of the season if Courtois joins Real.
Hart is currently on a season-long loan at West Ham, where he recently lost his place in the side.
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The Sun declare that Chelsea “face a huge battle” to keep Courtois and that the club fear he will leave.
The Sun also say Antonio Conte’s job as Chelsea boss is hanging by a thread following the Blues’ 4-1 defeat at Watford.
Other newspapers report that Conte’s future is in serious doubt after his team’s second heavy defeat in less than a week.
Former Chelsea managers Carlo Ancelotti and Guss Hiddink are among the favourites to take over, with ex-Barcelona boss Luis Enrique also touted as a contender.
Meanwhile, the Daily Mirror reports that French media have linked Chelsea striker Alvaro Morata with a possible move to Paris St-Germain.