Roberto Martinez has expressed concern regarding Barcelona re-signing Everton youngster Gerard Deulofeu next summer, according to Sky Sports.
The Spanish winger joined Everton in July on a permanent deal after enjoying a successful loan spell at the Toffees two seasons ago, but his former employers Barcelona included a buy-back clause within his contract and boss Martinez now fears they may exercise the clause at the end of the season.
"There is nothing we can do if they activate the clause. That was the deal and the only way we could access the player in the terms that we wanted," Martinez said.
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The 21-year-old Deulofeu has been in eye-catching form at Goodison Park this season and recently notched a hat-trick for Spain Under-21s during the international break.
Everton acquired the Spaniard after he endured a forgetful season with Sevilla last year. Despite being part of their Europa League winning squad, Deulofeu made little impact and was deployed mostly as an impact substitute.
The skilful wide man is a product of Barcelona's famous La Masia academy and made 68 appearances for Barcelona B, scoring 27 goals. While at the Camp Nou, Deulofeu made quite a name for himself and was tipped to be the next big talent in world football.
However, he made only six appearances for the Catelonians over two years before being shipped out to Everton in 2013. The winger showed glimpses of his talent while on Merseyside but was blighted by injury and struggled to hold down a first team place.
It appears now, though, that Everton are getting the best out of Deulofeu and many would consider his name the first on Everton's team sheet. It's a testement to the Spaniard's form for keeping both Kevin Mirallas and Aaron Lennon out of the team.
However, Martinez will not want Deulofeu to perform as well as he has been to prevent former club Barcelona from bringing him back to Spain, but with the La Liga leaders boasting the attacking threat of Luis Suarez, Neymar and Lionel Messi, Deulofeu will have to perform extremely well to earn a move back to the current European champions in the summer.