Barca sign prospects, Carrasco returns

Barcelona signed two young players to join the club after this season and Atletico Madrid announced the return of Yannick Carrasco on Friday (Saturday AEDT), the final day of the transfer window in Spain.

Barcelona said they completed deals to bring Portuguese forward Francisco Trincao and Brazilian midfielder Matheus Fernandes into their squad on July 1.

Barcelona said they agreed to pay Portuguese club Braga 31 million euros ($A51 million) to acquire the 20-year-old Trincao for five years, beginning at season's end.

Since debuting with Braga in December 2018, Trincao has scored three goals in 29 matches. He has played for Portugal's youth teams and helped his national team win the Under-19 European Championship in 2018 as their top scorer.

Barcelona described him as a "talented and quick player with a good left foot" who can play as a winger on either side of the attack.

Barcelona said they paid Brazilian club Palmeiras 7 million euros ($A12 million) for Matheus, who will play the remainder of this season on loan at Valladolid.

Atletico will hope to boost their goal output immediately with the return of Carrasco, a Belgium forward who played for the Spanish club from 2015-18 before leaving for China.

He returns on a loan deal until the end of the season from Chinese club Dalian Professional.

Carrasco scored 23 goals, including one in the 2016 Champions League final that Atletico lost to Real Madrid. He made 124 appearances in his first stint with Atletico.

Villarreal presented striker Paco Alcacer a day after securing his move from Borussia Dortmund.

Sevilla also presented midfielder Jesus "Suso" Saenz two days after he joined the club on loan from AC Milan for this season and the next.

"I really wanted this to happen," the 26-year-old Suso said.

"We all made a huge effort and I am here, which is what I and my family wanted. I have been away since I was 16 and it is important to come back home."