Nelson is a 6’3” center who has played in 97.5% of all possible regular season games since coming into the league.
He is capable of playing in all situations in a top six role and averages 20+ goals a year without top powerplay unit ice time.
Last season he had 22 even strength goals which were tied with Barkov, Marner, Monahan, and Panarin to name a few, and did so while shooting very close to his career average.
I’m just not seeing how 6M is a bad deal by any means when you consider the Islanders’ organization depth at the position, the remaining centers available on the market, and how consistent Nelson performs. On top of all that, Trotz loves him.