Depending on the time frame and era so many players could fill this bill. The first name that comes to mind is Jim Brown, the hall of fame running back who ran and played out his brilliant short career with the Cleveland Browns.
he(rock) was a football player before he became a wrestler
Packers
George sandhu is a well known Football player.
Johnny Carey is a former football player. He was also a well known football manager.
Paul Robeson
Arsenal is the team in the premiership who play the most attractive football, and are well known for it.
There is not really a "most well known" player on any realm. There are the most geared folks, and the folks who know most about their class, but not any general well known people.
There are many opinions on who is the "most well known", but most people tend to agree that Micheal Jordan is pretty well known.
Fred Bennett is a well-known football player in the National Football League. He currently plays for the Calgary Stampede and is in the position of gridiron football cornerback.
Jordan
Ronnie Brown is a football player in the National Football League (NFL). He currently plays running back for the San Diego Chargers. He has been voted to the Pro Bowl once.
Joe Flacco is known mostly for his career as a professional football player. He plays for the Baltimore Ravens in the NFL and played college football at the University of Delaware.