How big of a loss would Thomas Partey be for Arsenal? (1:33)Open Extended ReactionsMyles Lewis-Skelly has signed a new long-term contract at Arsenal, the Premier League club confirmed on Thursday. Arsenal have not specified the length of the contract, though it is reported to be five years. Myles Lewis-Skelly has agreed a new contract at Arsenal. Lewis-Skelly featured in 19 of Arsenal's last 21 Premier League fixtures last season after breaking into the team before Christmas.