Manchester United manager Jose Mourinho has revealed IkerCasillas secretly attempted to challenge his authority during their time together at Real Madrid.

Mourinho made the bold decision of dropping the then-Madrid first choice goalkeeper during the 2012/2013 season, raising a few eyebrows in the club’s locker room and caused further controversy by playing youth product Antonio Adan and new signing Diego Lopez over the club captain for the remainder of the season.

The former Real Madrid manager left the Bernabeu at the end of the season but Casillas struggled to win back his place in the starting lineup under new manager Carlo Ancelotti, with the manager preferring Diego Lopez in the 2013/2014 season.

Speaking in an interview with UniversoValdano channel Vamos, the former Real Madrid goalkeeper says he wished had taken “the bull by the horns” and confronted Mourinho at the time.

However, Mourinho claims that IkerCasillas did undermine his authority, albeit secretly, even while they were still together at the Spanish capital.

Mourinho said, speaking to Portuguese newspaper Record, “It seems like an interview with someone who is at the end of his career. But when it comes to me, when he says he has never confronted me, that is not the truth.”

“He did it in a way that no one does better than him – secretly.”

IkerCasillas is a Spanish professional goalkeeper who currently plays for Portuguese club side FC Porto and the Spanish national team. He was dubbed the nickname “San Iker” for his ability to produce world class saves. He is also considered to be one of the greatest goalkeepers of his time.

He is known for his athleticism, quick reactions and his outstanding shot stopping ability.

He made his international debut for Spain in 2009 at age 19 and has now made a national record of 167 appearances for La Roja.