D.C. United’s Branko Boskovic, a high-priced European midfielder who was rounding into form recently after a slow start this season, has been diagnosed with a torn ACL in his left knee, the club announced before Friday’s match with the Houston Dynamo.

Boskovic was injured in the 85th minute of Tuesday’s U.S. Open Cup qualifier against the New England Revolution at Maryland SoccerPlex. He had scored two goals in the second half before suffering a number of hard tackles.

Boskovic was initially diagnosed with a contusion and results from an MRI exam were negative. He didn’t travel with the club to Houston as what was believed to be a precaution ahead of two MLS games next week.

Boskovic, 30, is a starter for Montenegro’s national team, which is in a tight group race with heavily favored England for a berth in the 2012 European Championship.

More details later.....