Shelton was just a 1 year deal at 1 million (he's free agent this year). Hankins has 1 year left (his was a 2 year deal with 4.2 mill average). Both players where ranked top 8 in the 2019 free agency class for interior line-man.
It was a stacked DT class but unfortunately "we like the guys we have". It's a very VERY arrogant mentality, they act like bringing in outside help undermines your own home grown talent/draft picks when in reality it provides valuable depth and challenges your players for starting positions...... (aka it gives you a deep playoff caliber roster, who would possibly want that ?)
Ego is a huge issue with the front office. What's even more embarassing is cutting crawford that off-season (which is what most media reporters where claiming should be an obvious cap casulity) would of saved enough money to get Hankins and Shelton for FREE !!!!!
Can't do that though because it 1. It undermines the front office giving Crawford a large contract and 2. We can't do it because "crawfords our friend"
Like I said, EGO