Well, if its 23 million + Quag or 23 million without him, at the end of the day, it's still 23 million.
Take into consideration what his value currently is to this squad, which is basically next to nothing.
And how much does everyone think Torino would pay for a player who has subsequently been benched for the last 2 years, is 31 years old, and is on an expensive contract vis a vis his current form and age?