The Hornets signed him from Real Betis last summer, but has never played.
However, there was a twist. The move, reported by Inside Spanish Football to be for a fee in the region of £1.5 million, would not come into play until this summer. He went out on loan to Deportivo La Coruna instead of playing the 2014-15 Championship season with Watford.
Now the summer has rolled around and he is set to join up with Watford on the 1st of July. However, he does not want that.
Juanfran, who has never kicked a ball for Watford, has told the Spanish press he wants to stay at Depor after helping them survive relegation to the Segunda Liga.
"Let's wait and see what conveys Deportivo. Here I have been fortunate to play all the time, I had a great time.
"They know that my intention is to continue if possible, I welcome it and if not this year, I hope someday to return to enjoy Riazor and La Coruna, because I am very happy with this experience.
"La Coruña is a great place to make things go right. At Depor if things start to go well, it's a great site because it is a great stadium, great fans and a great city."
Watford will be looking to bring in new recruits this summer and Juanfran might have been one of those players.
However, he is clearly keen on remaining in Spain and Watford might be able to make a quick buck off the 26-year-old - who played 34 times for Depor last season, scoring once.
Perhaps letting him go is the right course of action.