The 30-year-old was reported by team officials to be in danger of missing the whole tournament after he injured himself when attempting an overhead kick during training on June 4.
“Kamil Glik is a very tough guy, he is doing everything he can to recover from his injury and he is training several hours a day, but whether or not Kamil will be part of the team against Senegal is unknown,” Nawalka said.
Nawalka has not decided whether Wojciech Szczesny or Lukasz Fabianski would start in goal, saying he would make the decision after training on Monday.
Overall, he said Poland had prepared “optimally” for the tournament.
His only concern seemed to be that a few members of the squad had not seen much action at club level.
He also paid tribute to Poland captain and record goalscorer Robert Lewandowski, describing him as a professional with immense skill and talent. “I believe that the skill and the scale of the talent of Lewandowski is immense, and is complimented by a lot of work, lots of months of working with the team, and a very professional attitude to football, as well as to maintaining his form and physical efficiency. It all comes together. He is one of the best players in the world.”