Joao Felix is on the verge of joining the Blues for the remainder of the season.
At the World Cup, he scored one goal in five appearances.
It is thought that Felix would prefer a move to Chelsea.
Felix was the fifth most expensive player in the history of the game when he was bought by Atlante.
Felix doesn't reach the heights expected on a consistent basis.
Blues owner Todd Boehly wants to bolster manager Graham Potter's injury-hit squad, who have slipped to 10th in the premier league and were hammered by Manchester City in the FA cup on Sunday.
At the World Cup, Felix was a part of the team that went out in the quarter-finals.
He played 73 minutes in a loss to Barcelona on Sunday after scoring in a 2-0 win against Elche.
Felix has five goals and three assists this season.