The Boro boss will be reunited with Jose Mourinho at Old Trafford on Saturday.
IBTimes UK looks back upon the most incredible shocks from the world of sport over the past 12 months.
The club's owners supplied almost 30,000 Jamie Vardy masks to fans on Boxing Day.
Bailey has shown keenness to play in the Premier League if regular game time is on offer.
The 29-year-old won his second Wimbledon title and another Olympic gold this year.
The 32-year-old led the Foxes to their superb title triumph last season.
Leicester City winger Riyad Mahrez has also been included by Uefa.com in their fantasy team.
Arsenal, Manchester City and Leicester City have made it to the knock out stages of the Champions League.
Leicester City has won only one game in the last nine.
Arsenal, Leicester City, Napoli and Monaco are the other potential opponents.
IBTimes UK looks at the best and worst case scenarios for English football's surviving three teams.
Spurs qualify for the knockout stages of the Europa League as second-string Foxes are thrashed in Portugal.
Arsenal offer online discounts of up to 75%, while Leicester re-brand the day 'Blue Friday'.
Spurs eliminated from knockout contention, but Foxes go through to the last 16 as Group G winners.
Vardy caught the Chelsea defender with nasty challenge during 2-2 draw at Wembley.
The victory is Ireland's first against the New Zealand team for 111 years
Spurs were again well short of their best at Wembley Stadium.
Tottenham are winless in their last four games in all competitions.
The England striker continues his recovery from an ankle injury.
The Wales international limped off during the 3-1 win over Crystal Palace.
Crutchlow has been in fine form in recent times and was successful in picking up points consistently.
The French goalkeeper was on top form in Germany.