Real Madrid look set to be without Toni Kroos for the start of the new season, with the midfielder confirming he has been suffering with a pubic bone issue.

Madrid confirmed on Tuesday that Kroos, who retired from international football following Germany's disappointing showing at Euro 2020, had been diagnosed with a pubalgia – a strain or tear of the soft tissue in the groin.

Kroos subsequently revealed on Twitter that he had been suffering with the problem for some time.

"After several month (sic.) of problems on my pubic bone I think it's time to give it a rest and work on it to be well prepared for a long season. Back asap as always," the 31-year-old tweeted.

On Wednesday, reports in Spanish publication AS suggested Kroos could be out for around a month.

Even if the estimation proves incorrect, Kroos seems highly unlikely to be able to play in Carlo Ancelotti's opening LaLiga match of his second stint in charge of Madrid.

Los Blancos, who face Milan on Sunday in their final pre-season friendly, take on Deportivo Alaves on August 14. They then travel to Levante and Real Betis before the first international break of 2021-22.

Kroos made 28 league appearances last term, scoring three goals.