Harry Redknapp has claimed that not even Antonio Conte would have saved Sunderland from the drop this season.
The veteran boss has told BBC Radio 5 Live that he knew the Black Cats were doomed from the start of the season.
Redknapp himself saved Birmingham from relegation in recent weeks, parachuted in for the final few games following the sacking of Gianfranco Zola.
He said: "I knew Sunderland would get relegated at the start of the year.
"That's not David's fault.
"He took over a squad that had struggled to stay up for five years running, bought no good players in. They're going to go down this year sure enough and it doesn't matter who would've gone in there.
"David Moyes is a top manager, you could have put [Antonio] Conte in there and he wouldn't have kept Sunderland up either."
Redknapp was speaking to the radio station to bemoan the lack of opportunities for British managers.
He claimed that Sean Dyche would be able to manage a top six club and said foreign owners are obsessed with bringing in big names from abroad.
He said: "I only see it getting worse, I don't see it improving. I think that in a few years every club in the Premier League will be foreign owned, that's the way it's going. Every time a club wants to sell the only money that's around is foreign money, and they come in and they want to bring in, they've heard of famous managers from abroad and give them the job.
"They're no better than the lads here in reality, they've got better players. It's not difficult to manage some of the top teams."