So that would likely mean 7-7.5 for Trouba if it is 6 year or longer term. Do not see the possibility he signs for less than that ballpark.
I think 7-7.5M for Trouba on a 7-8 year deal after this season would be very good for the Jets.
One thing that I think some don't appreciate is that the Jets' cap crunch might be more acute this season than next. By next season they will likely be able to move out Myers, Kulikov and Perreault, replacing them with young players on ELCs that are still developing (e.g. Vesalainen / Petan for Perreault, Niku / Samberg for Kulikov, Poolman for Myers).
The Jets can probably fit in Morrissey at 5.5M and Trouba at 7.5M.
Below is an example with Morrissey at 5.5m, Trouba at 7m and Wheeler at 7.5m.