Riccardo Calafiori is the latest Arsenal player to have picked up an injury concern. Arsenal have already had to contend with a raft of injuries so far this season. Mikel Arteta has had to cope without the likes of Martin Odegaard, Mikel Merino, Oleksandr Zinchenko, and Ben White, amongst others, for key matches this season. Arsenal’s injury crisis has caused Arteta sleepless nights at times, and the Spanish coach now has another worry in this regard, as Riccardo Calafiori is believed to have picked up a problem. Very late on against Leicester City last time out, Calafiori went to ground with …