ESC Gaming have announced on their website that they have pulled out of this weekend's RaidCall EMS One finals due to Jarosław "pasha" Jarząbkowski feeling ill.
The Polish giants had qualified for the tournament after finishing second in their group and were due to face Ninjas in Pyjamas in the quarter-finals.
k1ck, who placed third in the group, behind Absolute Legends and ESC Gaming, are a serious candidate to replace the Polish side, HLTV.org understands.
According to a statement issued by ESC, Jarząbkowski has been suffering from a fever for almost two weeks now and is having trouble breathing.
"We are very sad that we won't be able to attend EMS One finals in Cologne, but due to pasha illness (pneumonia) we need to wait a bit untill he gets better," Wiktor "TaZ" Wojtas told ESC Gaming's website.
"We had some rocky results lately and we can't afford to attend the event with a standin, as we know that there are teams, who might pick up a fight vs NiP with their full lineups.
"I'm very sorry that we come with this news so late, but it is the best decision for both parties."
ESC were in action at the SLTV StarSeries finals last weekend, placing fourth after defeats to NiP and Natus Vincere.
Wojtas' side are due to attend the ESEA finals in Dallas next week as a replacement for Virtus.pro, taking on Quantic Gaming in the quarter-finals.