Jansen returns to Bolton

The 28 year-old striker was given a free tranfer by the Trotters at the end of last season and has since been training with Major League Soccer side New York Red Bulls.

However, he failed to win a deal in the U.S and is now back at the Reebok Stadium in an attempt to win himself a fresh deal.

Despite the club-record signing of Nicolas Anelka, Allardyce is in the market for another forward after selling Jared Borgetti and an injury to Kevin Davies.