Born in Brazil but yet to win a senior cap for the national team, Magalhaes left Avai in his homeland for just £1.5m in January 2017.
He is worth a lot more than that now, with the French side valuing the 22-year-old at around £30m.
So is he worth it, would he suit the Premier League, and where will he end up? Here, Starsport takes a closer look.
Would he suit the Premier League?
French football writer Rich Allen has watched Magalhaes extensively. He said: “I think he could be a very good signing for a Premier League team and if he does go for £30-35m, that’s a pretty decent price for both seller and buyer.”
Magalhaes has played 34 times for Lille this season, including every minute of their Champions League campaign.
Lille star Gabriel has alerted the attention of Chelsea and Everton
A tall, left-footed centre back, he initially failed to make much of an impact for the club and was loaned out to Troyes and then Dynamo Zagreb.
But he broke into the first team at Lille more regularly towards the end of last season, and has now carved out a niche for himself, impressing scouts from around Europe.
Allen said: “He had two loan spells away with mixed success. But he’s really stepped it up this season, becoming a first choice pick and now has Champion’s League experience.
“He’s got a pretty sensible head on him too. When he wasn’t playing in his early Lille career he asked to be loaned out. He put in extra training to get back into the reckoning. He is looking the part.”
Magalhaes has excelled for Lille in the Champions League
Magalhaes could partner Mason Holgate at Everton
Where would he fit in?
Both Everton and Chelsea lack left-footed centre backs. At Goodison Park, Magalhaes is seen as the ideal candidate to partner Mason Holgate as the left-sided defender in a back four.
The fact both of them are reasonably quick would allow Everton to play with a…