The winger is preparing for his third loan spell in the Championship after struggling to make an impact at Sunderland.
The Swiss international signed on loan for Nottingham Forest this week.
Bournemouth sold the winger to Newcastle United earlier this summer.
Newcastle United lost 1-0 to Fulham at Craven Cottage.
The Frenchman is set to join the Hammers this weekend.
The 24-year-old has left the Scottish Premiership side for Rotherham United.
Newcastle United were beaten by Fulham in their Championship opener on Friday.
Don Goodman doesn't think Leeds will be challenging the top eight this season.
The Gunners have been in impressive form in pre-season so far.
Many are hoping to see Rangers challenge Celtic for the title next season.
Leeds United have won three, drawn one and lost four in all competitions since beating Derby in January.
Glasgow Rangers are still looking for Mark Warburton's permanent replacement, and Sutton has offered them some advice.
Vincent Janssen has commented on his situation at Tottenham.
Celtic overcame Motherwell with ease this weekend but how did the young midfielder fare?
Queens Park Rangers won against Birmingham City in the Championship on Saturday.
The Irishman admits that Leeds did not play good enough.
Rodgers insists he has no interest in signing Rennes goalkeeper Benoit Costil because of Gordon's excellent form but how much longer will he be at Celtic?
The 19-year-old is a reported target for Glasgow Rangers, who are without a manager after Mark Warburton departed Ibrox last week.
The 30-year-old has never fully convinced at Newcastle United and appears set for a return to Ligue 1 with Lille.
Southampton manager Claude Puel could be tempted to play his young star on the biggest stage.