Atletico Madrid have urged Diego Costa to return to Chelsea to boost their chances of landing the Spaniard in January.
That is according to the Daily Mail, who say Atletico remain confident of sealing a deal for the striker when the transfer window reopens.
Costa failed to secure a move away from Stamford Bridge over the summer and is unwanted by Blues boss Antonio Conte.
He is currently in Brazil on a self-imposed exile from west London, but Atletico, who are under transfer embargo until January, have apparently advised him to go back.
Here are the rest of Sunday's transfer rumours...
Stories from the Sunday Mirror and the People
Ross Barkley may not play for Everton again - and has made up mind over his future
Exclusive : Class of ’92 "have their sights fixed on owning Manchester United”
Philippe Coutinho given no assurances by Liverpool over his future
Gareth Southgate leaps to defence of "ballsy" Raheem Sterling
Ronald Koeman ready to dump Wayne Rooney if Everton striker steps out of line again after drink driving charge
Jurgen Klopp ready to re-integrate Philippe Coutinho - but Liverpool sweating over whether he will return on time
Exclusive: Emmanuel Petit launches brutal blast at "disinterested" Arsenal stars who are "acting like babies and kids"
Exclusive: Man City assure Raheem Sterling over his future amid fury over Arsenal exchange
Harry Kane urges England fans to keep calm and get behind Three Lions on road to Russia
Rafa Benitez will NOT walk out on Newcastle United despite unhappiness over transfer market misses
Transfer news and gossip from other sites and papers
Real Madrid snubbed the chance to sign Alexis Sanchez on transfer deadline day ( Don Balon )
Juventus to go back in for Emre Can in January - but they're not convinced they can do a deal (Tuttsoport)
Riyad Mahrez jetted to Old Trafford in a bid to secure a deadline day move to Manchester United ( Star )