The Hammers have been leading the chase for the ۲۶ - year - old all summer and have seen two previous bids rejected.
Jarvis handed in a transfer request at Molineux as he looked to seal a move back to the Premier League.
Now, coincidentally on the same day as team - mate Steven Fletcher undergoes his medical at Sunderland, Jarvis is doing the same at West Ham.
Sky Sports understands the deal could eventually be worth 10million to Wolves.
