I would love for Gambrell to sign and instantly slot into the NHL roster but I'm not really seeing where he'd fit logistically. Top 9ish is kinda locked in personnel wise with Couture, Pavelski, Hertl, Meier, Kane, Donskoi, Labanc, Boedker, and Tierney. I could maybe see Labanc being the odd one out considering the way he's played lately. I think it would make more sense for the lineup if Thornton does come back though since it would force a skilled player down to the 4th line and having Gambrell there too would make it into a skill line rather than a grind line. Speaking of grind line, 5 guys vying for a spot there too.
It's pretty crowded and Gambrell is most likely better than the 4th line guys but I'm not sure about a stylistic fit.