David Wells? right knee is starting to feel well again, but he is prepared to retire immediately if he suffers another setback. ?Yeah, this (season) is it for me and I think if I have any complications from here on out with the knee and if it sets me back, I don?t think there?s any reason why they should keep me aboard,? he said. ?I think they should, if I have to go on another DL and rehab the knee again, then, you know what, let Lenny (DiNardo) stay up here and let him work every five days and give the kid an opportunity to pitch in the big leagues for a while.?