Two other middle linebacker options besides Zaven Collins at 28: Jayson Oweh and Joseph Ossai

Oweh is a tweener. He doesn't have the size to play DE @ 252#. But he does project as an OLB in a 4-3 or 3-4 defense and he can drop off the line to play in space. He's real fluid moving around the field to play in space.
He's 257.

The same size as Junior Gallette and roughly the same size as Alex Okafor and Marcus Davenport.

He can play DE.

He might even end up being very good there, especially at LE like Danielle Hunter, but I just project him better at LB.