Football.London says Arsenal have agreed to sign Sao Paulo winger Marquinhos for a fee in the region of £3million.
The 19-year-old will join the club this summer after extensive talks with Gunners technical director Edu.
The arrival of Marquinhos will not have any impact on the club's summer transfer plans, with the likes of Manchester City forward Gabriel Jesus, Leicester midfielder Youri Tielemans and Bologna defender Aaron Hickey also being targeted.
When asked if he expects another busy summer in terms of player recruitment, manager Mikel Arteta said: "I am expecting so, yes. I think both competitions [the Champions League and Europa League] require a much larger squad because the amount of games you play is much bigger in both, so I don't think [which you qualify for] makes a lot of difference or changes a lot.
"If you can financially afford it and we don't have to do the turnaround in the squad that we've had to do, if you ask me what I want it's 22 outfield players and three goalkeepers.
"You have to come a long way in the aspects that you see on the pitch, it's a lot of things that have to be put in place, and that takes time."
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