WCE are likely to be pretty active this trade period, so there's a fair chance they won't have pick 23 with other trades flying about everywhere.If it were to happen, simplest deal for Carroll to WCE would be a swap of 2nd round picks (23 for 31*). Gives us a second pick that should come in before a bid on Ben C.
Unfortunately I don't think we'll get a lot for him, especially that he'll be out of contract.