Mikel Arteta is already being proactive this summer as he has taken a number of Arsenal players on an early training camp. Pre-season does not officially begin for some time yet, and players would not normally reconvene for the new campaign before that point. However, Mikel Arteta is already looking to get a head start on his rivals, and has taken a number of Arsenal players to Marbella to conduct some training. Whilst details of this trip have not been officially disclosed by the club, The Standard have reported that Fabio Vieira, Eddie Nketiah, Ben White, Reiss Nelson, Jurrien Timber, and Em…