Ajax might win but it's sure going to be a tough test. Real Sociedad is a team that is hard to predict how well they will play. Like today, they played against a stunning Barcelona team amd won the game but played in that same stadium against Osasuna and they lost it. It might be the same for ajax but we'd have to just wait till that day. I'm personally not going going to be backing Sociedad on that day because they have been shit this season so far.
It is very impressive the results that Ajax has in the Europa League, although in the Eredivisie Ajax has had a decline in performance and not good results in recent seasons, but so far this season in the Europa League in fact Ajax is the best team. Although Ajax is only in second place, but if I consider about the trend of Ajax in the Eredivisie then of course Ajax is a very good team with the most number of goals and conceding very little like that. About the next match where Ajax will play away against Real Sociedad, I personally will still be confident that Ajax will still have a chance to win or at least be able to hold Real Sociedad to a draw.
Because after all, basically Real Sociedad so far this season has become a team that does not have high productivity in making goals and also, Real Sociedad is a team that does not have a strong defense line. Although previously Real Sociedad managed to beat Barcelona in La Liga, but for me it is still not a guarantee for the results they will get in the Europa League later against Ajax.