Speaking to TMW Radio, Fabrizio Ferrari, one of Axel Tuanzebe's representatives, said: "At the moment it is a dry loan.
"It will be up to Axel’s family to talk about it with the club and eventually find an agreement. In the meantime, let's see how it goes, then we will judge.
"There are all the margins, no doubt. Axel did not come here to do four months but to make people understand his football level, to show his characteristics.
"Then it will be up to Napoli to find the economic solution. Axel was very happy, we chatted a lot about the differences between English and Italian football."
Tuanzebe joined Napoli on loan until the end of the 2021/22 campaign after terminating his temporary agreement with Aston Villa.
The centre-back is set to return to Manchester United in June since there's no buyout option in his deal with the Serie A side.
