Jurgen Klopp is encouraged by videos of Virgil van Dijk training in the gym but warned the commanding Liverpool centre-back still has a long road to recovery ahead of him.
Van Dijk suffered a serious knee injury during the 2-2 draw against Everton in October's Merseyside derby, as a result of a robust challenge from Jordan Pickford.
He is likely to miss the majority of the season while his status for the delayed Euro 2020 remains unclear.
This week, Reds fans would have been boosted by the sight of Van Dijk's workouts in Dubai - where Netherlands great Clarence Seedorf also dropped in.