Carlos Alcaraz sealed a transfer deadline day loan move to Everton from Flamengo on Monday, the Premier League club announced.
The Argentina Under-23 international's deal runs until the end of the season, with Everton having the option to make the move permanent in the summer.
"I am ready for any challenge with this beautiful club so that's why I came and accepted the offer to keep fighting for my dreams," Alcaraz said.
The 22-year-old attacking midfielder previously played in the Premier League for Southampton and had a loan spell at Juventus.
Alcaraz began his career with Racing Club at the age of 17, helping the Buenos Aires-based side lift the Argentine Champions Trophy in 2022 by scoring the winner in the final against Boca Juniors.
He scored three goals and provided two assists in 19 matches since his arrival at Flamengo last August.
"We've been looking to add players to give us more depth, particularly after the recent injuries we've picked up," Everton manager David Moyes said. "Carlos has Premier League experience, he's still young and we believe he can bring some energy to the team which will help us between now and the end of the season."
Moyes, who coached Everton from 2002-13, returned to the Merseyside club at the beginning of January after they sacked then-manager Sean Dyche. The Toffees are in 16th place in the Premier League on 26 points after 23 games.
Information from The Associated Press and Reuters was used in this story.
