William Saliba has now tipped one Arsenal player to make a huge impact when club football returns to north London next season. Mikel Arteta and Edu Gaspar will already be working diligently to improve their playing staff and it seems as if a new striker is on the cards. Kai Havertz has been thriving in a false nine role since the turn of the year but Arsenal would seem well advised to add to their options. Gabriel Jesus’ position seems slightly precarious right now, he suddenly doesn’t feel particularly well suited to a central or wide role in the front three. But a player like Alexander Isak …