Cleveland Cavaliers star LeBron James has offered his support to Johnny Manziel following his decision to enter rehab.

The Cleveland Browns quarterback made the decision to undergo treatment for personal problems with the support of the club after struggling in his rookie season in the NFL.

James, who has built up a friendship with Manziel this year, feels that the quarterback deserves all the help he needs after making the decision.

"I haven't talked to him. I found out about the information when you guys found out about it," James is quoted as saying by ESPN.

"If it's a guy that's seeking help, then as a friend I support him and want him to get better. And his friends and family, we all believe in him and we think this is a good step if that's the route he's going to take."

The Browns selected Manziel in the first round of the 2014 Draft, but the 22-year-old started just two games for the club during the campaign.