The Ghana international's last appearance for the Gunners came in a 1-0 win over Manchester City in October, a couple of weeks before he sustained his latest serious issue in training.
Partey's problem was severe enough to require surgery, and after omitting him from his squad for the Africa Cup of Nations, then-Ghana boss Chris Hughton described the issue as the worst injury that the midfielder had faced in his career.
Partey was briefly back in full training with his teammates in January only to suffer a setback, but his complication was not an especially damaging one, and he was back with the rest of the group before the first leg of their Champions League last-16 clash with Porto.
The 30-year-old did not take part in that 1-0 win and also failed to make the cut for the Gunners' 4-1 Premier League beating of Newcastle United last Saturday, the 30th game he has missed through injury this season.
However, speaking to the media ahead of Monday's trip to Bramall Lane, Arteta shared a positive update on Partey's fitness, and the Spaniard expects the ex-Atletico Madrid man to travel to Sheffield.
«Thomas had a session before the last game and now he's done two consecutive sessions so he should be part of the squad on Monday,» arsenal.com quotes Arteta as saying.
Partey's return to fitness comes after Fabio Vieira made his comeback from a groin operation as an unused substitute against Porto, while Gabriel Jesus was also back on the bench against Newcastle after another knee concern.
The Brazilian did not earn any minutes against the Magpies, though,
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