The current season has seen Tau being reduced to an impact player coming from the bench and he has started just two matches out of 10 matches across all competitions.
The former Mamelodi Sundowns star is also yet to score nor assist this term with the likes of Wessam Ali Abou, Emam Ashour and Mahmoud Kahraba being preferred ahead of him.
The most recent Al Ahly match saw Tau being introduced in stoppage time against Mexico's Pachuca and went on to play the entire extra-time in the 2024 Fifa Intercontinental Cup semi-final clash on Saturday.
The lefty converted Al Ahly's fifth spot-kick of a penalty shootout, but the African champions succumbed to a 6-5 defeat on penalties following an enthralling 0-0 draw in Qatar.