Darragh MacAnthony believes his Peterborough side got out of League One at just the right time.
The Posh owner has branded it a "frightening place next season" given the size and stature of the clubs in the division.
Sunderland are among a number of former Premier League sides that'll ply their trade in the league next season and MacAnthony believes clubs will spend big next season.
Speaking on his podcast, The Hard Truth, MacAnthony said: “League One is a frightening place next season. You can name 10 ex-Premier League clubs.
“Where do I start? Sheffield Wednesday, Ipswich, Sunderland, Bolton have just gone up.
“It's a graveyard of ex-Premier League teams. I said at the start of the season: 'We need to get out of this league this year, it is getting tougher and tougher.'
“If a Burton Albion or a Morecambe goes up next year, it's a miracle because there are some big, big clubs. It'll be interesting to see who they recruit in the summer.
“We haven't even spoken about Wigan. Wigan will spend money, Ipswich will spend money, Sunderland will spend money, Sheffield Wednesday is owned by a wealthy guy who'll want to get back on the saddle again.
“Portsmouth, owned by the Eisners, I don't know if they will spent that kind of money. But, again, big club and I'm sure I've missed another big boy.
“Lincoln will go again, I haven't even mentioned Oxford. There are a lot of big clubs and that's the way it goes.”
