I watched this last night and thought it was really good.
I know what you mean about the girlfriend's acting though - it was bad.
Cass himself has a part in it and I noticed a couple of Pennant's in the closing credits.
I once went to see West Ham v Coventry and Wimbledon v Blackburn(?) because I was living in London at the time and wanted to see a "big game". (Premier League)