2. Gary Neville
For Manchester United fans, Gary Neville is a football legend and needs no introduction.
The former right-back spent all 19 years of his professional career starring at Old Trafford. He made 598 appearances on route to 12 Premier League titles, 4 FA Cups, 3 EFL Cups and two Champions League crowns.
The one big regret of his career was being unable to translate his club success over to the English national team.
Upon retiring in 2011, Neville became a pundit and won a reputation for his outspoken views on tactics being deployed by coaches.
"Did I see my sacking at Valencia coming? The whole world could see it coming! You don't have to be an expert." 😂
— Sky Sports Premier League (@SkySportsPL) November 25, 2019
But the day Peter Lim appointed Neville as head coach of Spanish giants Valencia in December 2015 left the football world stunned. Nobody in England or Spain could believe it.
Unsurprisingly, Gary ran into problems right from the off.
He didn’t speak Spanish and struggled to make the players understand his methods.
The Englishman lasted just four months with a record of 10 wins, 7 draws and 11 defeats in 28 games.
Neville returned to his punditry role afterwards, and he’s never stepped into a dugout ever since.