When Ezekiel Elliott returns, what roster move will the Cowboys make?

FRISCO - When Ezekiel Elliott returns - something both sides of his contract extension dispute thinks can happen quickly - what roster move will the Dallas Cowboys make?
The Cowboys reassemble as a team on Monday morning, featuring a 10:45 a.m. practice session here inside The Star, with the focus on preparation for next Sunday's NFL Week 1 visit from the New York Giants.
How close is Ezekiel Elliott to a contract extension and a #Cowboys uniform on Monday? https://t.co/jTtkaT2JVV
— fishsports ✭ (@fishsports) August 31, 2019
All involved think it is increasingly possible that the "Gurley-like'' offer Dallas put on Zeke's desk (as we reported to start the week) can be the impetus to get an extension done in time for Elliott to join his teammates.
And if/when that happens this week ... what happened to the just-completed 53-man roster.
There has been speculation that Zeke in would mean fellow running back Alfred Morris out. If that ever was the plan, I believe it's been dumped now that Jordan Chunn is dinged up. Morris is here to stay, I think.
Aflred Morris made final roster behind Tony Pollard. You have to believe if they sign Zeke, Morris will be the corresponding roster move.
— Clarence Hill Jr (@clarencehilljr) August 31, 2019
No, there is a reason Dallas as it made its cuts went heavy in the offensive line, to the tune of 11 guys. And that reason is because one (or more) of them is destined to be gone when Zeke shows up.
There exist three possibilities:

1) Dallas can move Connor McGovern to IR. As we reported last Tuesday, the prized rookie suffered a setback in his pec rehab.
We’ll stand by our Tuesday story: OL McGovern is on #Cowboys varsity for a day, then stashed on IR for 2019.
— fishsports ✭ (@fishsports) September 1, 2019
He can't help the club now. But doing his transaction this way allows him to return during the season. IR makes sense.
2) Brandon Knight made the 53. That constituted a surprise; he's the fourth tackle. But maybe not for long.
3) Adam Redmond has position flex, so he has some value. But I'm told that he's the guy other teams were calling about in trade talks. Would Dallas rather have Redmond or, say, a seventh-round pick? If Zeke shows up any time soon, maybe the Cowboys put Redmond back on the trade block, and there's your opening.

Mike Fisher - as a newspaper beat writer and columnist and on radio and TV, where he is an Emmy winner - has covered the NFL since 1983 and the Dallas Cowboys since 1990, is the author of two best-selling books on the Cowboys.
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