Tau has not featured for the record CAF Champions League winners since last month after picking up another injury during a training session.
However, the Red Devils have confirmed that Tau has now started a new program as he continues his recovery from a muscle injury.
28. Kaizer Chiefs (South Africa)
18. Orlando Pirates (South Africa)
10. Wydad AC (Morocco)
9. CS Sfaxien (Tunisa)
8. Al Hilal (Sudan)
7. Etoile du Sahel (Tunisia)
6. Al-Merreikh (Sudan)
4. Zamalek (Egypt)
3. TP Mazembe (DR Congo)
2. Esperance (Tunisia)
1. Al Ahly (Egypt)
5. Mamelodi Sundowns (South Africa)