Arsenal starlet Mika Biereth trained with the first-team squad on several occasions over the years prior to his loan spells this season. Biereth is currently thriving on loan at Austrian side SK Sturm Graz, and has admitted that training with Gabriel Magalhaes helped him develop physically. The 21-year-old joined Arsenal as a teenager from Fulham, and was on the bench at times in the 2021-22 season when Mikel Arteta’s side were struggling with a lot of injury and illness-related absences. The striker has now revealed which Arsenal players at the time were the best at helping him adapt to first…