The visitors' main advantage is their immense motivation. Blackburn are just four points above the relegation zone (19th), while Birmingham are firmly entrenched in midtable (11th) and can afford to drop points. Despite their lower position, Blackburn are approaching the match in good spirits: they are unbeaten for two matches in a row (a draw with Middlesbrough and an away win against Millwall), while the hosts are alternating wins and losses.
The injury situation is changing the situation. Birmingham will be without several defenders (Wagner, Buchanan, Cochrane), making their defense more vulnerable. However, Blackburn are in real trouble: about a dozen key players are out, including attacking leader Gudjohnsen and key midfielders. This will negate their advantage. Birmingham won 2-1 away in the first leg, but their home record is more even, with the visitors often taking points.
Birmingham remains the favorite due to their status as hosts and their league position, but Blackburn are fighting for survival and are adept at counterattacking. Player losses on both sides are reducing the quality of their play, and the visitors' high motivation allows them to hope for at least a draw.