A lot of Arsenal fans may be keeping a very close eye on Kieran Tierney’s fortunes at Real Sociedad whilst on loan this season. And following a recent injury, Tierney has now returned to start two games for the Spanish side. Playing 90 minutes yesterday, the Scot was part of an incredible 3-0 away win against Villarreal in La Liga. And in a pretty unique situation, Arsenal’s loanee is now playing with someone they are said to want to buy. Martin Zubimendi also played 90 minutes in the game, a player strongly linked with Arsenal in the past, and one that is still often mentioned when looking to…