Arsenal have signed Iceland goalkeeper Runar Alex Runarsson from Ligue 1 club Dijon on a four-year deal, the Premier League club said on Monday, Reuters reported Arsenal did not disclose the transfer fee but British media reported that they paid 1.5 million pounds ($1.92 million) for the 25-year-old, who played 13 games in all competitions for Dijon last season. Runarsson joins the north London club as a back-up to first-choice keeper Bernd Leno following the departure of Emiliano Martinez to Aston Villa. Runarsson's signing follows the arrival of Brazilian center back Gabriel Magalhaes and his compatriot Willian in midfield.