Arsenal midfielder Charlie Patino was once the biggest talent in the Hale End Academy, but he now faces an uncertain future. Patino spent last season on loan at Championship side Swansea City, where he made 35 appearances in all competitions, but returned to Arsenal at the end of the season. The 20-year-old has just one year remaining on his contract, and it seems unlikely that he will gain many first-team opportunities under Mikel Arteta if he is to remain at Arsenal. Patino started as Arsenal under-21s began their pre-season campaign in a friendly away at Boreham Wood, and he played the enti…