The 24-year-old has started every league game for the Teessiders this campaign but was withdrawn during Saturday’s game at Huddersfield.
Scroll down and flick through the pages of our picture gallery to see who will start for Boro against the Swans:
![Has been Boro's first-choice stopper this season.](https://www.thestar.co.uk/webimg/b25lY21zOmNlZDNiN2ZlLWZjMjMtNDMzNC05NjNkLWFlYzZiOWY1ZDI4ODoxMjZjZDg4Ny03MjcxLTQ3OWItODE2MS1mMjcxZTA4ODcyZWU=.jpg?crop=3:2&width=640)
1. GK: Marcus Bettinelli
Has been Boro's first-choice stopper this season. Photo: Alex Pantling
![Started in a more advanced position at Huddersfield but moves to right-back.](https://www.thestar.co.uk/webimg/b25lY21zOjEwNzliMWIyLWNlODEtNGUzNC04YzBlLWVkOTQ2ZWM2MDQ3Mjo4OWIyNTNiYi1kZWY2LTQ0MDUtYTI5NC1lNDYwOTBlNTlhN2M=.jpg?crop=3:2&width=640)
2. RB: Djed Spence
Started in a more advanced position at Huddersfield but moves to right-back. Photo: Getty Images
![Has played every minute of every league game this season.](https://www.thestar.co.uk/webimg/b25lY21zOmRmNWJjZGY5LTJhNGYtNDFiMy05MzUzLWJmZmRmNWNjOTFlNzo5NjliNWQ4ZS1hZjQwLTQ4MTQtYjM2Mi1jYzk2YWIxZmQ5OGQ=.jpg?crop=3:2&width=640)
3. CB: Paddy McNair
Has played every minute of every league game this season. Photo: Alex Pantling
![Was one of Boro's best performers at Huddersfield despite the defeat.](https://www.thestar.co.uk/webimg/b25lY21zOmFkZGY1MTI5LWI2NTEtNGFkMS04ZTAyLTM0YjFlMGFhMWQ4MDpkZDk5MmUzNy1kMTM4LTRmNGQtYjFmNy1hN2JlNzZhNzZmMDc=.jpg?crop=3:2&width=640)
4. CB: Dael Fry
Was one of Boro's best performers at Huddersfield despite the defeat. Photo: PA
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