I still like Quinton Byfield and think that they would rather keep Turcotte for their future 2nd line center if Eichel is their new number 1.
They still have Kopitar who is still doing well statistically, 56GP, 13G, 37A, 50Pts (last season) so they are in good shape at center. Also have Alex Iafallo. So if they add Eichel and Turcotte develops as expected then Byfield can be dealt as part of the deal.