Arsenal scouts were in San Sebastian on Wednesday night to watch on Real Sociedad’s Champions League game with Benfica, 90min understands.
There were a number of players of interest on show at the Anoeta Stadium, but sources have told 90min that the main reason for their presence was to check on the progress of Martin Zubimendi.
Zubimendi, a previous transfer target for Real Madrid and Barcelona, is emerging as a potential option for Arsenal ahead of the January transfer window as they look to bolster their midfield options.