Transfer rumours: Aubameyang, Giroud, Osimhen, Ndombele, Werner, Ruiz

Chelsea are keeping an eye on Pierre-Emerick Aubameyang’s situation at Arsenal and hope to make a summer move for the 30-year-old Gabon striker. (ESPN)

Chelsea have agreed a one-year contract extension with French striker Olivier Giroud, 33. (Di Marzio – in Italian)

The Blues have made contact with Lille over Nigerian striker Victor Osimhen, 21. (Le10Sport – in French)

Barcelona want to sign French midfielder Tanguy Ndombele, 23, from Tottenham and have offered a part-exchange deal that would see French centre-back Samuel Umtiti, 26, and Portuguese right-back Nelson Semedo move the other way. (Sky Sports)

Chelsea are preparing to keep Spanish goalkeeper Kepa Arrizabalaga, 25, despite being keen on AC Milan’s Italy international Gianluigi Donnarumma, 21. (Mail)

RB Leipzig sporting director Markus Krosche has no transfer approaches have been made for Germany striker Timo Werner in recent weeks despite strong reported interest in the 24-year-old from the likes of Liverpool and Barcelona. (Goal)

Manchester City, Paris Saint-Germain and Juventus are all chasing Lyon midfielder Houssem Aouar, 21. (RMC Sport – in French)

Napoli owner Aurelio De Laurentiis has named the price at which bidding can start for the club’s Spanish midfielder Fabian Ruiz, 24, with Manchester City keen on his signature. (Teamtalk)

Everton have contacted Barcelona over the availability of Brazilian defender Emerson, who is currently on loan at Real Betis. (Sport – in Spanish)

The Toffees have made a loan move for Barca’s Brazilian playmaker Philippe Coutinho, 27. (Sport – in Spanish)

Roma are ready to offer a three-year contract to 32-year-old Napoli and Belgium forward Dries Mertens. (Corriere dello Sport, via Goal in Italian)

Arsenal’s 23-year-old Spanish midfielder Dani Ceballos, who is on loan from Real Madrid, says he has been assured his future is at the Bernabeu. (Evening Standard)

Aston Villa and Crystal Palace are eyeing former Liverpool striker Fabio Borini. The 29-year-old Italian now plays for Hellas Verona. (L’Arena – via Birmingham Mail)

• Friday’s Gossip column