Port Vale have announced that midfielder Sam Kelly has joined the club on a two-year contract, with an option for a further 12 months.
The 21-year-old came through Norwich City's academy before joining Everton's youth ranks in 2012, making 25 appearances in the Under-21 Premier League.
Manager Rob Page told the club's website: "I'm very pleased to welcome Sam to Port Vale Football Club. I'm sure he will be a valuable player for us over the next few years."
Kelly spent last season with non-league side Cambridge City in the Southern League Premier Division.