Camila Giorgi has been accused of stealing antiques and failing to pay six months of rent before fleeing to the US.
The tennis star, 32, confirmed her shock retirement from the sport earlier this month.
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Having not played since March, Giorgi initially made no public reference to her retirement.
She eventually confirmed the news on Instagram, after appearing as retired on the International Tennis Integrity Agency’s website.
It was later claimed by Italian outlet La Gazzetta dello Sport that the former world No. 26 had fled to the United States, having been wanted for questioning by Italy’s financial police.
According to investigations of the Florence Prosecutor’s Office, Giorgi and her family have several “gaps” regarding unsubmitted tax returns.
Prior to leaving Italy for the US, Giorgi lived in a rental property in Calenzano, Tuscany.
Now, speaking to La Repubblica, her former landlord has made a series of claims against her.
The landlord alleges that Giorgi had six months of unpaid rent, and that she had taken furniture with her upon her departure.
The landlord claimed of the tennis star and her family: “They made half of our furniture disappear.
“Persian rugs, fine furniture, even an antique half-ton table. We are talking about damage between 50 and 100 thousand euros.”
In addition to Giorgi, her father Sergio, mother Claudia and brothers Leandro and Amadeus are also alleged to have departed for the US.
The landlord then claimed to have been in contact with Sergio since their departure.
They added: “I wrote to him that they must at least give us back our things, he responded in a contemptuous way saying that they were objects of little value.
“A hateful behaviour, for those like me who have suffered economic but also emotional damage.
“I can’t know how much is true or how much Camila owes the State, but I know what he owes us.
“Those objects are part of my mother’s life and mine: I want them back, at least this much, given that we have lost hope due to the thousands and thousands of euros in back rent.”
Last week, Giorgi wrote on her Instagram Story: “Please trust this Instagram for truthful information.
“To my lovely fans, I am happy to formally announce retirement from my tennis career. I am so grateful for your wonderful love and support for so many years.
“I cherish all the beautiful memories. There have been many inaccurate rumours about my future plans, so I look forward to providing more information about exciting opportunities ahead.
“It is a joy to share my life with you, and let’s continue this journey together. With much love, Camila.”
She also posted a seemingly unbothered mirror selfie to her Story.
In addition to peaking at world No26, Giorgi reached the Wimbledon quarter-finals in 2018.
Her last appearance on the WTA Tour came in Miami in March, where she lost 6-1, 6-1 to world No1 Iga Swiatek.
Away from tennis, Giorgi is also passionate about fashion.
She has done plenty of modelling work, including posing in luxurious lingerie.