The Detroit Red Wings selected Ehn, a forward from Skara, Sweden, in the fourth round (No. 106) of the 2014 NHL Draft after he made his debut in the Swedish Hockey League as an 18-year-old by playing two games for Frolunda in 2013-14. He continued to play in the SHL through the 2017-18 season before coming to North America for 2018-19.
Ehn is at his best when he's skating and forechecking. He can play on the third and fourth lines, and he's a reliable penalty-killer.