Because we own him for another two seasons, and they don't? He doesn't play for them anymore, so he does not have Champions League football to look forward to.
Not sure if anyone has posted this already, but I just had a look at Undav's appearances / goals stats, specifically in games he has STARTED.
They are:
25 goals in 33 starts in the Belgian top flight
5 goals in 6 starts in the Premier League
18 goals in 23 starts in the Bundesliga
How would...
Not for him it wasn't. Strikers need to be playing and scoring goals, he's have been our 4th choice option this season. I bet he's loving life at the moment, and made the right decision.