Landon Donovan has sensationally come out of retirement.

The USA national team legend will return to professional football with MLS club LA Galaxy, where he won four MLS Cup.

Donovan, 34, has signed for the Galaxy as a free agent for the remainder of the 2016 season.

In a Facebook post published on Thursday, Donovan said: "I care so deeply about the Galaxy organization, and I believe I could help in a small way to aid the team in its quest for a 6th MLS championship.

"Further, the opportunity to have my son Talon on the field with me after a game was a feeling that I would never be able to replicate.

"I then had a candid conversation with Bruce Arena and we began down the path of deciding whether this made sense.

"We both agreed that if this was going to happen, the expectations would be minimal and he would use me in situations that made sense for the team.

"I've spent a lot of time speaking with my family and close friends over the past several days, and we all agreed that this would be a wonderful opportunity and a win-win situation for everyone."

Donovan, who enjoyed two loan spells in the Premier League with Everton, is the all-time leading scorer and assist-maker in MLS history.