The German World Cup winner was not given a chance at Everton.
Shkodran Mustafi is clearly a player that has come on leaps and bounds since his time with Everton.
Everton snapped up the young German from Hamburg in 2009 but he played just one game for the club against BATE Borisov in the Europa League.
By January 2012 Moyes had decided Mustafi would not cut it in the Premier League and let him join Italian side Sampdoria on a free transfer.
The German international has admitted today, in an interview with Spanish publication Diario as, that during his time at Everton he started to wonder if he would make it in the professional ranks of football.
He told the paper:
"Sure (I thought I won't make it). When I first arrived in England, I spent three years without a game with the first team – just one game in the Europa League. I didn’t want to be there just to earn money and not play.
"You sign a three or four-year contract but if you are not playing, what happens after that? That was a tough time for me."
Of course his early setback at Everton did not hinder him.
He has gone on to become one of Europe's most coveted central defenders. He currently has a release clause at Valencia which, according to the Express, stands at a whopping £37 million. Not to forget the fact that he won the World Cup with Germany last summer.
Indeed things have only improved for Mustafi since getting the boot by Moyes at Everton. As for Moyes' post-Everton career, the least said the better.