The 14 times capped Congo international is also believed to interest Newcastle, Burnley and QPR .
Sam Allardyce has identified the 25 year old as a player he likes and the Hammers were today are actively pursuing the player.
The 6ft 2in goal scoring midfielder who netted ten goals in 29 starts for Reims in Ligue 1 last season and is keen on a switch to the Premier League.
He has made 14 appearances for his country and is understood to be rated at around £5 million with two years left on his deal at Reims.
He made his international debut as a teenager in 2008 and is very much a box to box player who gets his share of goals.
He added: “Prince is a decent player and a very realistic target – he’d be a good buy but there’s obviously going to be competition.
“He is one of many the Hammers have on the radar but with the World Cup now on the agenda, negotiations here and everywhere could be on a delay with managers and agents away in Brazil!”