According to The People, the footballer is jealous that the 'Fight For This Love' singer will be on tour with the Black Eyed Peas for a month.
A source claimed: "Ashley is pretty hopeful that he and Cheryl will get their marriage back on track but he is really, really jealous that Will will be spending so much time with his wife this month.
"He knows that Will fancies Cheryl and it irritates him a lot, and the worst thing for him is that there is absolutely nothing he can do about it because they are working together."
Will.i.am has previously shown a romantic interest in the Girls Aloud star.
