However, Van Gaal says that his one-time protege at Barcelona cannot begrudge the Red Devils what he feels was a thoroughly deserved goal for their efforts.
"We deserved the goal. I think Jose Mourinho knows it, too," he told reporters.
"It is again the same song. We have created a lot of chances but we don't finish these chances and then Chelsea make the first goal and then it's much more difficult because Chelsea is playing on more possession and make the pitch big and we have to run and run."
Despite the result, Van Gaal's side still lie 10 points adrift of the West Londoners in the table.