Transfermarkt is expected to lower Vinicius’ estimated market value from €140 million to €120 million when it updates its LaLiga player valuations on 5 October.
The assessment of the Real Madrid forward was previewed ahead of the scheduled update, with the 26-year-old set to become one of the players whose valuation falls.
Vinicius has made eight appearances for Real Madrid in all competitions this season. He has contributed one goal and three assists during that run.
The proposed change would represent a €20 million decrease in his current valuation. Transfermarkt’s new figures for LaLiga players will be published on 5 October.