Alexis Sanchez
It wasn't necessarily a bargain, but it wasn't a drastic amount of money spent either. The reported amount had been $34 million (transfermarkt.com). Manchester United were signing arguably Arsenal's best player at the time. The Chilean god who had dethroned Lionel's Messi's Argentina twice to Copa America glory.
This was a player who the season before had recorded a 24 goal and 10 assist campaign in which he single-handedly carried a demoralized Arsenal squad towards a Europa League place. Plus they had beaten rivals Manchester City to his signature. On the flip side, this was a 29-year-old player with only 6 months left in his contract.
What a downfall it has been ever since, Alexis Sanchez has looked like a shadow of the man that tore Premier League defenses to shreds and in the process became one of the best strikers to play the game at the time. This season has seen him record just 1 goal and 2 assists, he just turned 30 and is earning a jaw-dropping $391,000 per week.
He's looked far off-pace, has lost many duels he would usually win and above all looks demoralized. He does not have the same confidence, regularly being seen with his head down. Alexis Sanchez has it in him, to again reignite that fire within him that made him one of the most prolific most skilled dribblers on the planet. But Manchester United is not the place for him.
With wages like that you expect to be getting 20+ goals a season, Alexis Sanchez does not seem like that sort of player at Old Trafford. On paper, he was seen as the perfect partner to Romelu Lukaku with his pace and trickery being able to open up space for Lukaku. It has been anything but, with Mourinho having decided to drop the Chilean before he sustained his hamstring injury.
A move to where he'll be the main focal point of attack is the best move for a player who's playing days are winding down. It'll be good for United to recoup some of the absurd amount of cash they spent on him. Seriously, what were they thinking!?