Good possibilities but I think they likely go with some random young player who struck their fancy. A TE from the Titans, a young lineman from the Panthers, something like that.A couple of potential options:
1) Dwayne Allen could be gone in Miami after signing a deal that guaranteed him $1.25 MM this offseason. They would almost certainly trade him, but Pats would have to take his $3.25 MM cap number, with $1.25 MM guaranteed salary. But if he's cut, maybe they'd trust him more than Izzo?
2) Brandon Thorn threw out Nick Easton as a possibility after Andrews' condition came out. Easton signed a 4-year, $22.5 MM contract with the Saints this offseason, but New Orleans drafted Erik McCoy and Easton has been on kind of shaky ground this preseason. A deal works financially for both sides; the Saints would eat his $2 MM bonus but save his $2 MM guaranteed salary this year, while the Pats would take on his $2 MM in 2019 salary but have no guaranteed money after. Easton has started 17 NFL games at G and C so he'd give them some experience behind Karras.
EDIT: Also aren't veteran salaries guaranteed if you're on the week one roster? In which case Easton and Allen look more like week 2 guys.