Midfielders Jy Simpkin and Hugh Greenwood are among three additions to North Melbourne's squad for Sunday's match with the Western Bulldogs at Marvel Stadium.

Co-captain Simpkin was mic'd up for broadcaster Fox Footy when he suffered a head knock during Round 12's match against Essendon. Greenwood received a concussion during the same game.

Both players return after missing last week's game against Greater Western Sydney and completing the AFL's mandatory concussion protocols.

Utility Kayne Turner joins the experienced pair in the squad for Sunday's clash. Turner, 27, played the opening seven games of the season but has not featured at AFL level since round seven's heavy defeat to Melbourne.

Defender Aidan Corr keeps his place in the squad after playing as the tactical substitute against the Giants.

The 22-player team will be confirmed on Friday afternoon at 5pm AEST.