Adelaide captain Taylor Walker and midfielder Brad Crouch are unlikely to face Essendon in their round one clash at Etihad Stadium.

Walker is struggling with a foot injury while Crouch has an abdominal strain, and the pair are reportedly set to miss the opening match according to SEN's South Australian correspondent Tom Rehn. 

โ€œI think he (Walker) will probably miss, and I think Brad Crouch is in a similar boat,โ€ Rehn told SENโ€™s KB and The Doc on Monday.

โ€œI donโ€™t think theyโ€™re that far away, I think they will come in round two, maybe round three.

โ€œI think itโ€™s really unlikely they will play those guys early on.โ€

Neither player has featured during the JLT Community Series, and will be in a race against time to be fit for the following Thursday's grand final rematch with Richmond at the Adelaide Oval.

Rehn also suggested Lachlan Murphy could be a surprise bolter into the round one side, after an impressive pre-season display.