New manager Sean O'Driscoll takes on the player who is regarded as one of the best in the Kuwaiti league, the home country for Forest's new investors
Forest were taken over by Kuwait’s Al-Hasawi family on July 10th, and their first signing has seen them take their 27-year-old compatriot on trial from Kuwait’s leading club, Qadsia SC.
Al-Mutawa told the club’s official website: "It's a great honour to be trialling at Nottingham Forest.
"The club's reputation for attractive football is well known in the Middle East, and it's exciting to be coming here when a new manager is looking to play the kind of football that I want to be part of.
"I realise that the English Championship has a tough standard of play, but I'm confident that my goal-scoring and team-working skills will transfer, and that I can play a major part in Mr. O'Driscoll's plans going forwards."
Al-Mutawa has been capped 118 times by the Kuwait national team and has scored 39 times.
He has also had loan spells with clubs in Saudi Arabia and Qatar, and was also linked to a move to Spanish side Malaga.
According to the International Football Federation of History and Statistics, Al-Mutawa was the world's leading goalscorer in 2010, based on their formula of goals, game winning goals, first goals and other statistics, finishing ahead of Samuel Eto'o and David Villa.