Barcelona goalkeeper Marc-Andre ter Stegen was reluctant to celebrate Leo Messi's second goal in their Champions League defeat of Manchester United.

Messi's shot from distance appeared to catch David De Gea unaware, and the Spanish stopper allowed the ball to squirm under his body and into the net.

"It took me a while to celebrate that goal because of David de Gea's error - it hurt me," Ter Stegen explained at the launch of the 'Relatos Solidarios del Deporte' book.

"We're all human and this can happen to anyone.

"He plays in the same position as me, life goes on and I told him that it's nothing, just a human mistake; it could happen to me, too."