Arsenal have confirmed contract extensions for four players including David Luiz.
Pablo Mari and Cedric Soares have both penned long-term deals and Dani Ceballos has extended his loan spell from Real Madrid.
Arsenal have handed Luiz a one-year contract extension just a week after his horror show against Manchester City.
The Brazilian defender, 33, took full blame for the 3-0 defeat after he gave away a penalty and received a red card.
Arsenal have also secured long-term permanent deals for Mari from Flamengo and Cedric from Southampton.
Ceballos has extended his stay with the North London until the end of the current campaign.
Speaking on the club website, technical director Edu claimed the four stars bring the right “balance” to the squad.
He said: “I am really happy that we will have these players in our squad for the future.
“They have been part of the long-term technical plan Mikel and I have developed.
“They bring the right balance to our squad.
“David is a really important player for us. He has played most of our matches this season and has been important for the team.
“His passing, his communication with the team on and off the pitch. He helps everyone.”
Flamengo vice-president Marcos Braz confirmed Mari has been sold to the Gunners for a fee believed to be £14million.
But the Spanish centre-half, 26, is out for the remainder of the season after he suffered an ankle injury against City.
Edu continued: “With Pablo we are disappointed he got injured at Manchester City.
“Since Mikel arrived here he was asking for a central defender who was left-footed. We were really pleased with Pablo – his behaviour, the way he is training, his mentality and his quality.”
Soares, who will join the club on a long-term deal from the Saints, is yet to make appearance for the club since he joined in January.
Edu added: “Cedric is also going to be an important player. He has been unlucky with the injuries but he is close to being ready and gives us more strength in the right-back position.
“We are also pleased Dani will finish the season here. He is making a good contribution and we look forward to him having a strong finish to the season.”