The West Ham striker arrived at the Ricoh Arena on Thursday in a deal until the end of the season and will compete with Freddy Eastwood and Clinton Morrison for a starting berth.
Manager Chris Coleman, however, may decide not to make any changes to his forward line following Tuesday's 1-0 victory over third-placed Nottingham Forest, in which Eastwood netted the only goal of the game.
Other changes could be enforced elsewhere, though, as midfielder Aron Gunnarsson was forced off with a leg injury while centre-back James McPake is complaining of a stiff back. Both players missed training on Thursday but will be assessed on Friday.
Midfield duo Gary Deegan and Carl Baker and central defender Leon Barnett are on standby to replace the duo should they not make it.