Is he a serious contender to play for England? He lasted played for New Zealand in January 2013, so therefore he can theoretically make his England debut just after the 2017/18 Ashes series. He would be 37 years old, but he's clearly a brilliant match winning spinner. And he could play for 2/3 years whilst one of the young bucks get established.
Patel's record for Warwickshire is awesome:
First Class: 297 wickets at 26. 15 fifers and 2 tenfers
List A: 90 wickets at 22. 5 fourfers and 1 fifer
T20: 93 wickets at 21
Stats speak for themself!