Allan is expected to travel to England today as his transfer to Everton moves closer.
The ECHO has been told the Brazilian midfielder said his goodbyes in Italy last night and left on a flight this morning.
Everton made a breakthrough in talks with Napoli over the weekend and are now closing in on a £22m deal.
Allan has been on the radar of Carlo Ancelotti since he arrived at Goodison Park after working together at Napoli and they are close to being reunited.
Talks between the two clubs have been lengthy but moved rapidly towards a conclusion over the last week with Everton focusing efforts on bolstering their midfield.
Ancelotti is an admirer of Watford midfielder Abdoulaye Doucoure - who was wanted under the regime of Marco Silva last summer - and has asked the board about the possibility of signing James Rodriguez from Real Madrid.
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