Further, TFWs who are exempt from the LMO process such as intra-company transferees and TFWs with work permits issued under the North America Free Trade Agreement are exempt from the 4 year time cap. (tdslaw.com)
Mourinho's interest in the player is well known, and earlier in the year he claimed that the striker would already be in England if it weren't for work permit issues. (caughtoffside.com)
The biggest issue aside from cost for Arsenal is of course work permit issues. (justarsenal.com)