Not making Champions League, losing Vidic on a free and Rooney acting up for a transfer all summer might make that much more difficult.Giving him until the end of the season makes no sense.
The season is a write off, you don't make changes in January which change your season.
If you wanna back him - then you have to give him til at least the end of the 2014.
He should be given to the end of 2015 imo.