Mikel Merino has finally agreed a deal to sign for Arsenal, bringing an end to a saga that lasted nearly a month. The Gunners are set to part with £31.8m to complete the signing, with Merino scheduled to have his Arsenal medical imminently after agreeing terms on a four-year contract. Mikel Arteta has finally got his man, as the Spaniard becomes his second signing of the summer after Riccardo Calafiori. And Craig Burley believes Merino’s impending arrival will bring the best out of Declan Rice at Arsenal. Craig Burley explains how Mikel Merino transfer will affect Declan RicePrimarily a left-f…