 Tumba was the first European player to attend an NHL training camp, with the Boston Bruins in 1957.He reportedly received a $50,000 contract offer from the Bruins after scoring a goal against the New York Rangers in a preseason exhibition game as well as making five appearance for the Rangers Quebec Aces minor league team.However, Tumba turned down the offer as he would no longer have been eligible to play amateur hockey for the Swedish national team.