Mainz manager Rouven Schroder has confirmed his club are in talks with Liverpool over keeping Taiwo Awoniyi at Opel Arena.
The 22-year-old joined last summer and initially struggled for game time.
However, the Nigerian has experienced something of a resurgence since the Bundesliga resumed, playing every game and scoring a goal in the 2-2 draw at Cologne, his first for the club and of the season.
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He has also completed 90 minutes in Mainz's last two league outings, the most recent a shock 2-0 win at Eintracht Frankfurt.