"Poor and disappointing" was how Neil Harris described his side's 2-1 defeat at Bolton.

Millwall fell to a fourth successive defeat at the University of Bolton Stadium as goals from Pawel Olkowski and veteran midfielder Gary O'Neil ensured Lee Gregory's 87th-minute strike was only consolation.

Bolton, a club with severe off-field issues, rallied in the second half to drag themselves back into the relegation fight as Harris' Lions now sit just one place and one point above the relegation zone.

"It was one I didn't expect," added Harris who's side travel to Birmingham before an FA Cup quarter-final next Saturday.

"The cup game (against Brighton) at the Den will be a good occasion and exciting for the fans.

"Our priority though is the league and all I am focusing on is Birmingham away on Wednesday. It is a huge game after four defeats in a row.

"The first half was scrappy but I spoke at half-time about still doing the nitty-gritty stuff while adding the quality lacking in the first half.

"But the goals we gave away were poor one v one defending when the players didn't do enough.

"That's not acceptable.

"People had jobs to do and Gary O'Neil who isn't a spring chicken anymore ran virtually from his own box to the other end of the pitch and score.

"We had three players behind the ball before he gets his shot away.

"The positive thing is to get Lee Gregory back on the score sheet which is a plus."

READ: Report: Bolton 2 Millwall 1 - Trotters win 'six-pointer'