He's an interior linemen for a reason. Free's not bad enough. You must have the feet and arms for tackle first and foremost.
He played Tackle in HS and college and if memory serves leading up to the draft it was talked about him being able to play either Tackle or Guard.
This has nothing to do with Free it has everything to do with getting the 5 best guys out there. Leary is one of them as is Martin Fred Smith and Collins.
Sorry I don't buy 2 inches in arm length is going hinder someone from playing Tackle. Looking strictly at metrics is where these types of opinion forms, it's also why guys like Dak slide to the 4th and Romo goes undrafted.
I fully believe Martin can play the position without any issues.
You don't have to agree and frankly don't care if you do. Nor do I care to debate it with you any further. Have a good night thanks.