Pretty open secret that there's an unnamed PL goalkeeper that has severe ADHD.
Not difficult to identify which one.
Symptoms being unable to keep still, constantly fidgeting, inability to concentrate on tasks, excessive physical movement, excessive talking, acting without thinking. Stimulant medication (most commonly prescribed) can help but often comes with side effects such as jitteriness, irritability, moodiness, headaches, stomach aches, fast heart rate, and high blood pressure, so patient compliance is an issue.