There is no doubt that the Eagles will draft a defensive tackle. Milton Williams, second on the DT depth chart in snaps played, left in free agency and the Eagles have not signed a DT in free agency, and any they do between now and the draft is unlikely to make an impact.
The Eagles will take DT in all shapes and sizes, from short (6’1.5” Marlon Tuipulotu) to tall (6’6 u215c” Jordan Davis); from light (Milton Williams and Moro Ojomo are under 290 lbs) to heavy (Jordan Davis and Noah Ellis are over 340 lbs). It’s not the size that matters, it’s what you do with it, and the Eagles prefer quick DTs.