Hearts are waiting to discover the extent of injuries sustained by Eggert Jonsson and Arvydas Novikovas during Saturday's 3-0 win over Aberdeen.
The duo could now face fitness tests for Thursday's Europa League play-off against Tottenham.
Novikovas opened the scoring with his first goal of the season at Tynecastle but was forced out of the game at half-time with an ankle injury.
Jonsson then suffered a rib injury and was switched after receiving treatment.
Manager Paulo Sergio told the club's official website: "We will see how Arvydas and Eggert are.
"We have our first training session of the week, so we will have a look and see what the situation is."