Allan has sent his thanks to Napoli ahead of his proposed transfer to Everton.
Everton made a breakthrough in talks with the Serie A club over the weekend and a £22m deal is thought to be close.
Reports in Italy claim he left for Liverpool this morning after last night hosting a farewell dinner with friends.
In a video, the 29-year-old is asked for a message to send to the supporters of Napoli and he replies: "Just one thing: thanks for everything."
The images appear to show Allan in tears after spending five years with the Partenopei and lifting the Coppa Italia in June.
He started his career at native outfit Vasco De Gama before signing for Udinese in 2012.
Everton are remaining tight-lipped on any potential medical being scheduled for the midfielder.
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