Paris Saint-Germain risk being without Neymar for their vital Champions League Group C clash away at Red Star Belgrade on Tuesday as he is yet to return to full squad training after his latest injury, according to ESPN.
Neymar pulled up short early in the second half during PSG's 2-2 draw away at Bordeaux in Ligue 1 and although he has done fitness work on his own since then, he is yet to return to group sessions with his teammates.
According to sources, Neymar was not part of Sunday's rearranged training session and now faces a race against time to prove his fitness ahead of the Red Star clash with Tuchel and his players set to travel to Belgrade on Monday.
Should Neymar not be fit enough to start, PSG are likely to go with Kylian Mbappe, Edinson Cavani and Angel Di Maria in attack, while Julian Draxler is likely to start alongside Marco Verratti in midfield with Marquinhos required in defence.
Neymar and Mbappe recently shook off knocks to help PSG to an important 2-1 win over Liverpool at Parc des Princes in the Champions League that keeps their fate in their own hands, and although both took knocks just days later in Bordeaux, only Neymar remains in difficulty ahead of the trip to Serbia.
PSG are set to train one final time in Paris on Monday ahead of Red Star, but are yet to confirm their official schedule.