Pawlicki sustained the injury when crashing in the German Bundesliga clash between his Nordstern Stralsund and Wolfslake Falubaz Berlin.
The 21-year-old may need surgery and appears unlikely to take part in Poole on August 24.
Leszno team manager Roman Jankowski told the team’s official website: “I am in constant contact with Przemek. He has an appointment with Dr. Maciej Krajewski.
“Probably after this consultation, we will know all the details of the break, and we will take any subsequent decisions on a possible operation. For now, it is hard to say anything more.”