Nothing has yet been heard from the club but it is reported Bruma has become Simon Davey's first signing as he looks to improve on this season's 20th place finish in the Championship.
Bruma who has compared his move as like when Arjan De Zeeuw moved to Oakwell in 1995 may have angered the Red Army though by claiming he sees Barnsley as a "stepping stone"
Bruma who had a trial at Ipswich back in December told Algemeen Dagblad.
"At Barnsley I did not have to play a trial match"
"I have visited the home game against Leicester City and 25,000 amazing fans were in the stadium. The atmosphere was fantastic.
"I am seeing this as a step to more. Arjan de Zeeuw also played here and got a fantastic career in the Premiership.
"The Championship is however a very high level. I can become a better player here. I am very happy to play in the shirt of Barnsley."
Meanwhile Davey has said he will offer Robbie Williams a new contract once he returns from helping Blackpool in the Play-Offs.
Williams looked to have no future at Oakwell after he was allowed to join Simon Grayson's promotion chasers in March. His horror show in the 3-0 derby defeat against Sheffield Wednesday also looked to have shunted him closer to the exits.
Williams fine form for Blackpool, 4 goals in 9 starts, has caused Davey to have a rethink.
Davey told www.barnsleyfc.co.uk
"Robbie Williams was not mentioned earlier in the week but he is also out of contract this summer. Robbie will be offered a new deal to stay here.
"He has done very well at Blackpool in the last few months and has taken them to the brink of promotion to the Championship. He has done very, very well but he is a player we want to keep and he will be offered a new deal. I am sure that there will be a lot of speculation in the summer because he has done so well at Blackpool.
"We will sit down with him later this summer. We are leaving Robbie to concentrate on his play off campaign with Blackpool and we will sit down with him when that is over".