If/when Darren Waller retires, the Giants may come calling for Knox as they will have nothing at the TE position.
If the Bills are happy with Morris being TE2, they may be willing to part with Knox for a high draft choice.
Highly highly doubtful, but you never know what Beane has up his sleeve.
Knox is actually the perfect TE2, but his drops are a major concern and McBeane might be willing to move on at the right price.