Scott McDonald's 15th goal of the season seemed destined to be a winner against Hearts as the Hoops comfortably defended his 73rd-minute strike going into injury time.

But Gary Caldwell was punished for a push on Ibrahim Tall after Artur Boruc had stopped an Audrius Ksanavicius shot, and Andrius Velicka stroked home the spot-kick.

"We had to reshuffle the back four," Strachan said. "We have come here many a time with a settled back four and had a rough time of it.

"There were no rough periods in the game, which was great.

"I can't see it changing for the Milan game. One, they coped really well, and there's not much we can change."

Strachan had not seen the late equaliser coming at the end of a game of few opportunities.

"Usually here it's a crunching battle but that never materialised," he said.

"It was a nothing game for long periods. Usually we come here and the crowd is going crazy and there are periods of intense Hearts pressure, but there was none of that.

"I was expecting an onslaught after our goal but it never materialised. We were looking strong and from nowhere they scored a goal.

"We had three against one in the middle and lost the ball. I couldn't blame the back four for that."