Ronnie Stanley would have been an end of the first round type OT had he left after his junior year. Like McGlinchey he would have been a late 1st, early 2nd round guy... He returned for his senior year and war the first OT off the board and the #6 overall pick in the draft. Made himself a pretty penny.
The Ravens weren't concerned about Stanley's decision to come back for his senior year.
Zack Martin also returned for a 5th year when he didn't need too. He was in a similar position to Stanley and wound up coming off the board #16 overall and became an All Pro as a rookie...
ND OL under Harry Hiestand have had great success staying in South Bend as long as possible. McGlinchey and Nelson have that same opportunity if they do everything they are suppose to this off season. Could be 2 of the first 4 OL off the board in next year's draft, both in the first round. That would make 4,1st round OL and 1, 2nd round OL (Nick Martin) for Harry in a 5 year period.