Goalkeeper Almunia missed the FA Cup defeat at Manchester City due to a slight hamstring problem picked up on New Year's Day against Charlton while Abdi suffered a pelvic injury in the same game.
Both have trained and are expected to return to Gianfranco Zola's starting XI to face Boro.
But the game is likely to come too soon for Jonathan Hogg and Fitz Hall. Midfielder Hogg is hoping to return from a hamstring problem to face his hometown club but next weekend's clash with Huddersfield is a more realistic target.
Defender Hall is also struggling with a hamstring injury and is expected to be sidelined for a third consecutive game.
Young defenders Tommy Hoban (Achilles) and Neuton (training knock) are both doubts.