The club have already agreed a fee, believed to be £16million, and now the player has now settled on the move according to the Birmingham Mail.
The Baggies now believe the striker is theirs and a deal could be announced fomally today provided Sakho passes a medical without any setbacks.
Albion would be in a position to hold the examination with director of performance Dr Mark Gillett expected back from Devon, following last night’s 2-1 defeat to Torquay United, this afternoon.