Remember the theory that Iman Shumpert’s return would boost the Knicks and Amar’e Stoudemire’s return would hinder it?

It hasn’t turned out that way, and Stoudemire trade rumors have given way to Shumpert trade rumors. After 11 games, Shumpert still is trying to find his rookie mojo — on both ends on the floor.

A Yahoo! Sports report claimed the Suns had interest in a Shumpert-for-Jared Dudley swap that could include a Phoenix first-round pick.

But Shumpert, coming off ACL surgery that shelved him nine months, still is regarded as a centerpiece of the future and, at least before his comeback, was deemed virtually untouchable.

Shumpert’s comeback hit a low point in Minnesota on Friday. He was a non-factor, going scoreless in 12:11. Coach Mike Woodson is insistent on starting him in a small-ball lineup with Raymond Felton and Jason Kidd, but it’s not clicking on either end.

Woodson is most disappointed in Shumpert’s defense, which was spectacular in his rookie year. Woodson has held his minutes to less than 19 per game. Shumpert doesn’t seem as explosive, even missing a few dunks.