He's played about 100 minutes fewer than Adingra - who was widely criticised for lack of end product. Adingra got 1 goals and 2 assists in 700 minutes. Mundle has 0 and 0 in about 600 minutes.
Fwiw Mundle played very well today (largely). He was too quick and just ran past players for fun. Unfortunately, he can't away with that in the PL and just loses the ball all the time against better defenders. Even today, there's just no end product. Gets himself in great positions multiple times, great dribbling, and wants an extra 57 touches and it comes to nothing.
He probably needed a loan tbh - 6 months of regular starts to get into some rhythm, but we wouldn't do it. He'll find himself behind Angulo, Talbi, Traore, Le Fee etc in the wide areas once players are back fit.