Albion manager Gary Megson is reported to have lodged an estimated £500,000 bid for the Belgian keeper as he struggles to find a replacement keeper for Russell Hoult, who could be sidelined for as long as nine months with a back and hip injury.
However, Vaesen had already agreed on a one month loan deal with First Division strugglers Bradford City for whom he is expected to make his debut in their game against Ipswich Town on saturday.