First of all, let me give you the main answer so I don't waste your time here.
Can American football players play soccer?
American football players may have the physical ability to play soccer, but they likely lack the technical and tactical skills to be at professional level. Additionally, the rules, equipment, and field dimensions are different between the two sports, so it would take a lot of training.
But on the other hand, nothing is impossible right? There are a few exceptions in NFL.