Similarly, the visitors are hoping to make it three wins out of three in Group F following victories over Napoli and Rijeka so far.
Sociedad's unforeseen dominance in La Liga has seen the Europa League contenders storm to the top of the rankings after eight matches in the 2020-21 campaign, with Imanol Alguacil's men notching up 18 goals and conceding just four along the way.
The Whites and Blues boast an impressive six victories and two losses from their last eight matches across all competitions, with one of those defeats coming at the hands of Valencia in the league, while Napoli also proved too strong for the La Liga pace-setters last week.
Alguacil's men have not seen their domestic superiority translate into convincing results on the international stage, though, with Jon Bautista's injury-time winner seeing Sociedad just about manage to overcome Croatian outfit Rijeka 1-0 before a Matteo Politano winner saw Napoli defeat Sociedad by the same scoreline on matchday two.
However, Alguacil's men made amends at the weekend as they won their fourth game on the bounce in the Spanish top flight with a comfortable 4-1 triumph against Celta Vigo, with David Silva and Mikel Oyarzabal netting before Willian Jose bagged a second-half brace for Sociedad.
The Spanish side will no doubt hope to carry that momentum forward as they look to return to winning ways in the Europa League, but AZ are sure to have something to say about that given their results in Europe.
Whilst AZ are yet to taste defeat since losing to Dynamo Kiev in the Champions League qualifying rounds, the Eredivisie outfit only just managed to pick up their first top-flight victory of the season following five draws from their opening five.
Arne Slot's men finally managed to end their seemingly never-ending run of stalemates with a dominant victory over RKC Waalwijk at the weekend, with Albert Gudmundsson bagging a brace after Calvin Stengs broke the deadlock within the opening five minutes.
Despite struggling to pick up all three points in most of their league matches, AZ have had no such trouble internationally as they look to maintain their 100% record in the Europa League, with Slot's side recording a hard-fought win at Napoli before easily overcoming Rijeka on matchday two.
Gudmundsson netted twice in that game as well, with the young Icelandic key to AZ's hopes of picking up yet another victory in Europe when they travel to the Anoeta Stadium this week, and another three points here would put the Eredivisie outfit firmly in control of Group F as they bid to make the knockout stages for the second year running.
Real Sociedad Europa League form: WL
Real Sociedad form (all competitions): WWWWLW
AZ Europa League form: WW
AZ form (all competitions): DDWDWW
Sociedad captain Asier Illarramendi is struggling with a hip problem and is yet to return to team training, ruling him out of Thursday's encounter.
Defender Aritz Elustondo suffered a contracture before Sociedad's bout with Napoli and will also be forced to miss the trip to AZ, while Igor Zubeldia will also have to wait a little while longer to make his return to action.
Wholesale changes are unlikely for the hosts given their recent results, with last weekend's goalscorers Silva and Oyarzabal set to keep their places, but Portu and Alexander Isak are options for change amid a gruelling fixture schedule.
Real Sociedad possible starting lineup:
Remiro; Gorosabel, Le Normand, Sagnan, Monreal; Merino, Zubimendi, Silva; Portu, Isak, Oyarzabal
AZ possible starting lineup:
Bizot; Svensson, Letschert, Chatzidiakos, Wijndal; Koopmeiners, Midtsjo, De Wit; Stengs, Gudmundsson, Karlsson
We say: Real Sociedad 2-1 AZ
AZ have become renowned for their one-pointers in the Dutch top flight this season, but Slot's men will undoubtedly have their eyes on another three when they make the journey to Spain this week. However, Sociedad have slayed most who have stood before them so far and will be looking to stamp their authority on Group F with a win here, so we are backing the hosts to just edge this one.