Nothing official he's signed. I'm not sure about him last played in America were players usually go when they are surplus here.
I don't know if you've realised Gru but quite a few players from the MLS are now playing in England. Obviously that doesn't apply here as he was an England and Man Utd player before dropping down the leagues and eventually moving to the US. He's only ever scored 1 goal in his career so lump your lottery money on him scoring for us before Tom Eaves does
I heard from a very reliable source recently that PW tapped up one of our better players in the summer i.e. well before he'd left for Derby. The player in question was soon to be out of contract, was in two minds on signing a new offer, PW advised him not to sign. From what I gather, he was vague about the reasons why in his discussions with the player at the time, but he was obviously planning on luring him to Derby at some point.
It's a cut-throat business. I always thought that there was much more to PW than the nice guy/friendly barbecue bloke image that he promoted, and which fooled so many. PW is nobody's fool.