West Ham manager Slaven Bilic is determined to improve the squad next season, with the club announcing the departures of Alvaro Arbeloa, Jonathan Calleri and Gokhan Tore.
The Irons finished last season in 11th place, having initially struggled for consistency following the move to the converted London 2012 Olympic Stadium.
Bilic is set for some time out this summer, needing surgery on a long-standing hip problem - but he expects to be busy trying to bring in some fresh talent.
"We are not (just) starting now, we have been talking for the whole season, monitoring and now it is about time to do it, not necessarily in a couple of weeks but until the finish, until the end of the transfer window," the Croatian said to West Ham TV.