Though Giggsy is not at his best, I wouldn't want him to go- he still has plenty to offer, e.g. destroying Juve, putting us through to the QF?
I would like us to have a viable alternative, a hungry less established player, that would accept a squad role at first. Ricardo Quaresma sounds excellent, reflected in the clubs persuing him; Real, Juve, and United. Not entirely ready to fill Giggs' boots, but soon, he plays wide right and left like Figo, and is considered a similar quality or better. Actually it would be strange if we didn't sign one of Sportings' young talents considering the new connection, which is said to be stronger than the various partnerships already in place with Antwerp, etc.
I think Kewell would be a fine addition, Fergie singled him out as The Leeds player he liked awhile back. Not quite as good a dribbler as inform Giggs but close, he's tough and a strong finisher. He's got the quality, but has some baggage too.
Duff is another option, though more expensive probably. He is as talented as Kewell IMO, with a good scoring rate, two footed player, he is injury prone though, but a United type player- down to earth, gutsy and hard working and without Kewell's attitude.
Denilson is another talent, just the usual reservations about the latino adjustment factor.
Overmars' name has come up also. He's got prem experience but is no spring chicken.