The three-time European champions issued a statement on their official website telling supporters that they would not be able to bring in any electronic devices measuring more than 150mm x 100mm (6 inches x 4 inches), including laptops and tablet devices such as iPads and iPad minis.

"In line with UK airports we are reacting to the latest security intelligence," said the statement. "These actions are designed to ensure the continued safety and security of all spectators."

United said the scale of the 75,000 capacity stadium, dubbed the "Theatre of Dreams", and the club's high profile meant Old Trafford was at "unique" risk.

The northern England powerhouse is looking to rebuild on the pitch following the disappointment of finishing seventh in the domestic top flight last season, and appointed Dutchman Louis van Gaal as manager after sacking David Moyes.

Old Trafford hosts the first match of the 2014/15 Premier League season when United take on Swansea at 12:45pm local time (1145GMT) on Saturday.