Everton have completed the signing of 18-year-old defender Mason Holgate from Barnsley for an undisclosed fee.
Roberto Martinez confirmed at his Thursday morning press conference that a deal for the youngster was close and the highly-rated teenager has now penned a five-year contract, keeping him at the Club until the summer of 2020.
Following his debut last December, Holgate made 22 senior appearances for the League One Tykes and Martinez sees him as an exciting prospect for the future.
He said: "With Mason, an opportunity came up and we didn’t want to lose out. He is a young man with a very impressive future.
“His development is going to be important and it will be interesting to see how quickly he can have an impact on the first-team. But he is not a player who I would expect to perform straightaway in the Premier League - that would be very unfair.
“Mason, already at 18, has played 20 games in League One, which shows his incredible potential.
“I feel that we are the perfect place in order for Mason to develop into a top footballer. I know that he is a player who can bring us something quite unique, so we are excited about that possibility, even though he is one for the future rather than now.”