Everyone had high hopes for David Moyes when he succeeded the legendary Sir Alex Ferguson as Manchester United manager back in 2013, however his tenure at Old Trafford lasted just nine months.
Moyes got United to the quarter-finals of the Champions League, however they crashed out of the FA Cup in only the Third Round and they finished the season in seventh, 22 points behind neighbours and champions Manchester City - their worst-ever Premier League finish.
After a failed stint at Spanish club Real Sociedad, his new team Sunderland, who are currently bottom of the table, take on Hull City this afternoon. Ahead of a huge relegation clash, Moyes has opened up about something he now regrets doing whilst in charge of the Red Devils.
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When he arrived at the Theatre of Dreams, the Scotsman brought most of his Everton backroom staff with him, however he has now admitted that he probably would've been better-served to keep Hull boss Mike Phelan, Ferguson's assistant from 2008 to his retirement, in his team.
Moyes regrets getting rid of Phelan
"Looking back, with hindsight, Mike Phelan would have been a really strong person to keep at the club, but it's gone now," Moyes confessed, via Hull Daily Mail.
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"It's something I would have looked at differently. It was a really tough decision because I know Mike, I'd seen him around at games and I knew how well thought of he was. He knows it was never anything personal against him."
On Phelan being given a chance to prove his managerial prowess in England's top-flight, Moyes said: "He's got the opportunity to show what he can do now.
"They (Hull) have come up (from the Championship), Steve has left and it was always going to be a tough job at Hull but Mike's a good coach and he's now got a great chance to do very well as a manager.
"He did very well at the start, pulling out some big results when their backs were against the wall. It's another big game at our end of the table, I'm aware of that, and so are the players."
As it stands, Hull are in eighteenth position on 10 points and Sunderland are rock bottom on five, level with Swansea, so Moyes desperately needs a performance from his players to help to close that gap and move the Tyne-Wear club towards safety.
What were some of Moyes' worst decisions whilst in charge of Man Utd? Have YOUR say in the comments box below!