The England international has been out with a knee injury since May and returned to training last Friday.
The 26-year-old participated on Wednesday with those who did not start in the Boxing Day victory over West Brom.
A return to match action is unclear, with Arsene Wenger remaining cautious about the player’s comeback last week.
“Of course it’s fantastic because for him it’s like starting a new career, because he has been out for such a long time,” Wenger remarked.
“But I’m a bit cautious with the little setbacks you have when you have been out for a long time. You have to be patient. Welbeck will need some time.”
Wenger has tended to allow for three to four weeks of full training for long-term absentees before deeming them match fit, which means Wenger will need to wait a little longer.
Though Welbeck is ahead of the curve, Swansea away on January 14 seems like the earliest point of return.
The former Man United star’s pace and power could compliment the Gunners’ front three with the left-wing berth opening up.