The Brazilian talent has scored just twice in 2015.
The Brazilian has been linked with big moves to the Premier League before. Just a year ago he was linked with Arsenal and Liverpool by The Daily Mirror in an £18 million deal - his release clause with Benfica.
That came after his impressive start with the Lisbon club. He scored nine goals in his first 13 games for Benfica - leaving him one of Europe's top talents.
But 2015 has been tough for him. Since the turn of the year Talisca has scored just two goals in 29 appearances since January and the Brazilian Under-23 forward is now being linked with a loan move away from the club.
West Ham face an uphill battle to sign the talented 21-year-old who has been dubbed the 'next Rivaldo' in the past.
But with West Ham wanting to bring in another attacking option this winter they might just sneak the deal.