Mikel Arteta faces THREE key team selections ahead of the Champions League final. The Arsenal boss must decide on who plays right back, who will be in midfield and then whether to pick Kai Havertz or Viktor Gyokeres up front. Those decisions may ultimately decide on whether Arsenal can overcome the might of Paris Saint Germain in the Puskas Arena. But the dilemmas may also be Arsenal’s trump card - because the reality is Luis Enrique genuinely will not know who or what to prepare for. And that