Portugal star Cristiano Ronaldo claims he knows what the problem is at his former team Manchester United.
The Red Devils' struggles continued on Boxing Day after losing to relegation-threatened Wolverhampton Wanderers at the Molineux Stadium.
Ronaldo left Old Trafford under cloud after falling out with Erik ten Hag, however the Portuguese insists that new coach Ruben Amorim is not the problem.
Read: Ronaldo Makes Decision On Coaching Career
"[The] Premier League it's the most difficult league in the world.
"All the teams are good, all the teams fight, all the teams run, all the teams are strong. Football is different right now. There's no easy games any more.
"They need, I said this one year and a half ago, and I will continue to say it: The problem is not the coaches, it's like... I always give this example... it's like an aquarium.
"If you have the fish inside and he's sick and you take him out and you fix the problem and you put him again in an aquarium you will be sick again.
"The problem of Manchester United is the same. The problem is not always the coach. It's much more than that."
