Thomas Partey is notably missing from Arsenal F.C.'s lineup in their Champions League semifinal clash against PSG due to an undisclosed injury he sustained during training sessions earlier this week. Manager Mikel Arteta mentioned that while Partey has shown promising performance this season, he didn't want to take any chances on his fitness for such a crucial match. The decision aims to prioritize player well-being and ensure that Partey is fit for future fixtures.