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Aberdeen's Ash Taylor is likely to miss the League Cup semi-final against Dundee United on 31 January.

The centre-back was substituted due to a knee problem sustained during the 3-3 draw against Dundee on Saturday.

The 25-year-old is expected to undergo an operation on Wednesday and could face a month on the sidelines.

The former Tranmere player was part of the Dons side that racked up eight consecutive clean-sheets in the league, until the draw on Saturday.

Last week, Taylor signed a contract extension keeping him at Pittodrie until 2017.

Fellow central defender Russell Anderson, 35, has not played since having knee surgery in September.