Cristiano Ronaldo and Iker Casillas: Real Madrid duo lift the Guinness International Cup last year

Real Madrid, AC Milan, Roma, Inter Milan and Olympiakos will also be involved in the tournament which will take place in cities across the United States from July 26 to August 4 with live coverage on Sky Sports.

The final will be played at Miami's Sun Life Stadium on Monday August 4 and there will also be matches staged in Charlotte, Chicago, Dallas, Denver, New York/New Jersey, Philadelphia, Phoenix, Washington DC and two additional cities.

The eight teams will be divided into two groups of four with the winners of Group A and Group B meeting in the final.

Real Madrid defeated Chelsea 3-1 in Miami in the inaugural final last year with Cristiano Ronaldo scoring twice for the Spanish side.

It will be Manchester United's fifth pre-season tour of the US, although their plans may be affected if they have to take part in the early qualifying stages of the Europa League in early August.

The tournament kicks an incredible season of live football for Sky Sports, offering subscribers more matches than ever before.

Viewers will be able to enjoy exclusively live 116 matches from the Barclays Premier League, 112 matches from the Sky Bet Football League including playoffs and all three Finals, 30 matches from the Scottish Premier League, live coverage of the UEFA Champions League including the semi-finals and Final, over 100 matches from Spain's La Liga, and coverage of all home nations' qualifiers for Euro 2016.

Viewers can also enjoy a range of additional football programming including The Footballers' Football Show, The Fantasy Football Club, Soccer Saturday, Soccer AM, Goals on Sunday, FL72 and Revista de la Liga.