The Reds are 25 points clear on top of the table and were just two wins away from clinching the title before matches were suspended in March.
Matches are expected to resume next month, but in Deeney's opinion, the integrity of the 2019/20 season has been thwarted.
"I believe that when it comes to the integrity of this season anyway, it's already gone," Deeney told CNN. "I feel sorry for Liverpool because no matter how it plays out, they deserve to win the league. They deserve to get the trophy.
"But no matter how it plays out, even if we play all the games, it's still going to be the year spoiled by the pandemic. It's not going to be that year that Liverpool won the league being the best team and, you know, it's 30 years they haven't won for.
"So I do feel sorry for Liverpool and their players and Jordan [Henderson], but in terms of integrity, there's no way you could say that this is a viable competition.
"It's like running a marathon, 20 odd miles, stopping for two months and then sprinting the last bit and going: 'Ah, that was a good time that.'"