Paris St-Germain face an anxious wait to see if Kylian Mbappe will be fit to face Manchester City in Tuesday's Champions League semi-final second leg.
The striker, 22, missed Saturday's win over Lens with a calf injury.
Boss Mauricio Pochettino says his top scorer will be monitored in training before a decision is made on his availability for the tie in Manchester.
"We need to assess Kylian," said the Argentine, whose side trail 2-1 from the first leg.
"Today he is going to start an individual training session and see if he can be with the team. There is still one day and we will see and decide if he is going to be available."
France international Mbappe has scored 37 goals in 43 appearances in all competitions this season, including eight in 10 Champions League matches.
PSG are looking to reach the final of the Champions League for the second year running, having lost to Bayern Munich in Lisbon last season.
To do so, Pochettino is urging his side to be more clinical than they were in the first leg in Paris.
"We will try to give trust and confidence to the players," he added.
"The intention is to deprive them of the possession but it is a challenge. They have played six years under the same philosophy with Pep.
"We are trying to get more balance. We need to be ready to suffer in some moments of the game. We need to be clinical and aggressive."
Mbappe has starred for his club in this season's Champions League, scoring a hat-trick in their 4-1 win away in Barcelona in the last 16 and a double away to Bayern Munich in the quarter-finals.
He first caught the eye of fans beyond France by scoring against Manchester City at the Etihad Stadium for Monaco in the Champions League last 16 in 2017, aged just 18. That was his first goal in the competition.
PSG will definitely be without midfielder Idrissa Gana Gueye for Tuesday's game. He is suspended after being sent off late on in the first leg.