The centre midfielder has become one of the key men for Napoli this season and he is now attracting interest from major European clubs after impressing in his 45 matches so far this season.
Paris Saint-Germain are likely to be the front runners to sign the Brazilian, as they are rumoured to be preparing a large deal to bring the Brazilian in.
Ancelotti has spoken with the directors regarding a contract extension for Allan, as he is concerned his current contract will not be anywhere near what PSG would be able to offer the 28 year old.