Gudmundsson (hamstring) could be facing around four weeks out with a suspected hamstring injury, making him likely to miss the season opener at Nottingham Forest, according to coach Daniel Farke, per Leeds Live. "Initial assessment is that he could be that he will miss the start of the Premier League season. So at the moment it's realistic to speak about, overall with his injury, four weeks. First week is now nearly done. But it could easily be that he misses the first game, or perhaps the first two games"