Cristiano Ronaldo described his return to Manchester United as 'disastrous', a new book sensationally claims as it's also alleged he's angry at a lack of investment at the club's training ground and shocked at the commitment of his team-mates

Cristiano Ronaldo described his return to Manchester United as 'a disaster' in sensational new claims from a book amid increasing speculation over his future at Old Trafford.

The Portuguese superstar returned to Old Trafford last summer after originally leaving the Red Devils back in 2009 for an £80million move to Spanish giants Real Madrid.

Ronaldo's return, however, has not been plain sailing and a new book being released next month has stated the forward's frustration on his return.

The book, Messi vs Ronaldo: One Rivalry, Two GOATs, and the Era That Remade the World’s Game, which goes into detail on his illustrious career has revealed all, according to The Sun.