Paul Merson handed Shkodran Mustafi a brutal farewell at Arsenal by claiming the German defender will disappoint after sealing a move to Schalke.
The 28-year-old centre-back terminated his contract with the north London side on deadline day before signing a six-month deal with the relegation-threatened Bundesliga side.
Mustafi, who joined Arsenal from Valencia in 2016 for £35million, had fallen out of favour under Mikel Arteta and had only featured nine times in all competitions this season.
Reporter:ud83dudde3 "Is he the sort of player Arsenal can let go?