The Reds are 25 points clear at the top of the table but uncertainty over when the 2019-20 season will resume is leading some to suggest it may not be finished at all.
City clinched back-to-back titles in the previous two seasons, but Gundogan - who won the Bundesliga under Liverpool manager Jurgen Klopp during their time together at Borussia Dortmund - would have no issue in conceding the crown to their rivals this season.
He told German broadcaster ZDF: "It would be okay for me. You have to be sporting."
Asked whether playing out the rest of the season behind closed doors might appeal as an option, Gundogan replied: "Honestly, I can't imagine that - and I don't know how realistic it is."
With the Football Association opting to cancel the season for all clubs below the three National League divisions in non-league football, many of the smaller clubs in England are facing difficulties amid the COVID-19 pandemic.
Gundogan would be in favour of top players sacrificing their salaries to help those struggling lower down the football pyramid during the crisis, saying: "Of course I would find that okay, of course. The lower league clubs do not have it so easy."
The 29-year-old, who joined City in June 2016, revealed he is finding life difficult during the lockdown.
"You are sometimes afraid to go for a walk for 10 to 15 minutes outside, even though it was oddly and ironically extremely beautiful weather here in Manchester," said Gundogan.