Chelsea's Andrey Santos is spotted at Vasco game as he prepares to re-join the club on loan

Chelsea’s Andrey Santos was in attendance at Vasco da Gama vs Boavista on Monday.

The 18-year-old is set to return on loan to Vasco, after they and Chelsea agreed terms on a loan move until the end of June.

Chelsea signed Santos in January but they were unable to get a work permit for him to play in England.

The midfielder, who will likely represent Brazil at the Under-20 World Cup which starts in May, will return to Chelsea in July - with the hope that a work permit will then be granted.

He is set to begin training with the team later this week, but, in a photo shared by @Nathan_Gissing on Twitter, watched on as the side played.

The Blues saw off interest from the likes of Man City and Newcastle to snap up the teenager in an £18m move during the January transfer window.

He was one of eight summer signings in a huge winter spurge from owner Todd Boehly, but was unable to take to the pitch.

He joined from Vasco, where he played 37 times, scoring eight goals.

The game finished 4-1 to Vasco, with Pedro Raul, Alex Teixeira and Jose Luis Rodriguez all on the scoresheet.

Speaking in Chelsea's pre-match press conference ahead of their Premier League loss to Southampton earlier this month, Potter mentioned the Brazilian's situation.

Potter said: 'Santos is still in the same place. We’re looking at what the options are for him.'

The move is set to be completed in the coming days.