Klopp said he will follow Saudi Arabia's international friendly against Portugal in Düsseldorf on Wednesday, the paper said.

The Mainz manager said he was notably interested in Hilal player Ahmed Al-Suwaileh.

"My friend Kurt Jara, who coaches SV Salzburg, said Al-Suwaileh is very talented," Klopp said.

"Jara said he wanted to sign Suwaileh, so I thought it would be a good opportunity to watch him up close.

"I also want to see players like Mohamed Nour, Khaled Aziz and Asian Footballer of the Year Hamad Al-Montasheri," he added.

Mainz already have an Arab player in their ranks in Egyptian Mohamed Zidan.