The 20-year-old has barely featured for the Stadio Olympico outfit but found fine form on loan at Sporting Gijon last season and has already represented Paraguay at senior level.
Despite his adoptive club finishing just one place above the relegation zone, Sanabria netted eleven times in 29 La Liga appearances – also providing one assist.
Last week, Gazzetta dello Sport reported that Spurs had already agreed personal terms with Sanabria but were yet to decide a fee with Roma.
However, such an agreement could be just around the corner, with Italian journalist Gianluca Di Marzio claiming talks between the two clubs are scheduled for Wednesday.
Giallorossi reportedly value the South American at £16.6million and the Lilywhites are known to be on the lookout for an understudy to star forward Harry Kane.