West Bromwich Albion have signed Galatasaray striker Mbaye Diagne on loan until the end of the season.
"It has been a long negotiation and finally we have found someone who can give us a bit more," said boss Sam Allardyce.
"But there's no guarantee he is going to switch it on straight away."
West Brom have also signed Scotland winger Robert Snodgrass from West Ham and goalkeeper Andy Lonergan in this window and Allardyce said their aim was to bring in two more players before the window closes at 23:00 GMT on Monday.