Galatasaray manager Fatih Terim has issued an apology to his club's fans for their "terrible" loss against Real Madrid on Tuesday.

The Turkish champions were battered 6-1 at the Turk Telekom Arena by the La Liga giants in their opening match of the new Champions League campaign.

Having trailed just 1-0 at the break, Terim feels that his players gave up after Madrid doubled their lead.

"There is not much to say after a defeat like that but we lost the game in a terrible way," Terim told reporters. "Madrid didn't have a chance in the first half, whereas we had three or four. We suddenly conceded goals without any apparent reason.

"We started the second half well but following a dreadful mistake the score became 2-0.

"After that my players gave up the game because both physically and in terms of morale you can't fight against the situation."

Cristiano Ronaldo netted a hat-trick for Madrid with a Karim Benzema brace and an Isco opener completing the rout.