New forward a priority with Alvarez also on listFunds in place to make one marquee signingArsenal will reward Mikel Arteta for ending Arsenal’s 22-year wait to be champions by offering him a ­lucrative new contract that will cement the Spaniard’s status as one of the best-paid managers in the world. The club are also well advanced with plans to strengthen his squad.Talks over extending Arteta’s deal beyond next summe