The fullback has been training with the Hammers.
Allardyce said: "Ricardo's just been in for a few weeks trying to get his fitness up and we've helped him out with a few games.
"We've got no spaces in the 25-man squad so there's nothing doing with us. But we had a great relationship with him at Bolton and he asked to come in and get fit and that's what he's done.
"He's ready and raring to go if anyone needs a left-back or a left midfielder.
"I'm not sure if there is Interest from other clubs but he's fit now and ready to get fixed up with a new club."