Barcelona coach Xavi has warned Cristiano Ronaldo not to underestimate the standard of the Saudi Pro League.

The former Manchester United striker has signed for Al Nassr and is awaiting his debut.

Xavi, who spent six years in the country as a player and then manager with Qatar's Al Sadd, does not think the 37-year-old's final chapter will be as smooth as expected.

He said: "Ronaldo has signed for one of the best clubs in Saudi Arabia, but it's a challenge.

"This league is very complicated. I played against several of their teams when I coached Al Sadd. It will be a challenge.

"Saudi Arabia has things to improve, but that's the same as in Spain, where we have 200 hundred things to improve. Everyone deserves that football should go around the world."