Allan, 21, has enjoyed a bright start of the season at Vasco, but with a buy-out clause inserted into his contract there is very little that the club could do to resist a move.
Vasco retain 20% of his economic rights, but with a Uruguayan company in control of his future, the deal will not profit the Brazilian club as much as it could have.
if completed, Allan will join Brazilians Neuton, Gabriel Silva and Danilo in the Udinese set-up.
