Multiple sources have confirmed that Galatasaray have officially submitted a bid for Ismaila Sarr. The offer for the Crystal Palace forward had been speculated for a number of weeks, but represents the first concrete bid for the player. While negotiations continue, they are said to be progressing. Until a fee and conditions are finalised, the deal remains vulnerable to disruption - especially if Manchester United decide to make a formal offer of their own in the coming days. Crystal Palace have also been linked with Alieu Eybi Njie, Anan Khalaili and Zavier Gozo while Galatasaray are reportedly monitoring Aleksey Batrakov, Malick Fofana and Abdessamad Ezzalzouli. Looking for Galatasaray transfer rumours? Follow us on Twitter @PlayerSwitchCom for more rumours just like this.