The 28-year-old sustained ligament damage in Dortmund's DFB Cup final win against Eintracht Frankfurt in May and underwent successful surgery in early June, ruling him out of action until 2018.
Reus has since been hard at work on his recovery, first exercising on a treadmill before being pictured in individual training.
The winger - who recently said "I would give away all my money to be healthy again" - is now able to take part in exercises with the ball in the club's Footbonaut training room, as BVB's tweet below shows, indicating that a return to full training is not too far off.
⚽️ Guckt mal, wer alles wieder den Ball am Fuß hat... pic.twitter.com/o0JxTa4w4E— Borussia Dortmund (@BVB) 13 décembre 2017
The Germany international is expected to be back on first-team duty in early 2018, saying in an interview with GQ magazine last month that "I will be back on the pitch again when my body tells me that it’s ready".
Dortmund's attacking midfield cover has been limited of late, with Maximilian Philipp and Mario Götze suffering serious injuries. That has placed more responsibility on the shoulders of Christian Pulisic, Andrey Yarmolenko, Andre Schürrle and Shinji Kagawa, who scored in Matchday 16's 2-0 win at Mainz, Borussia's first Bundesliga victory since September and first under new coach Peter Stöger.
Reus missed 16 games due to injury in 2016/17, but scored seven goals in 17 Bundesliga outings, adding a further four in as many UEFA Champions League appearances.
Watch: Reus' top 5 Bundesliga goals in 2016/17