The left-back is returning from a loan spell at Spanish side Osasuna, where he has impressed with a number of eye-catching performances.
Those displays have sparked numerous questions about his future, with clubs in England and Spain both rumoured to be eyeing up a move for him at some point.
In the meantime, he has returned to Watford as they gear up for life back in the Championship but says his agent is working with the club on a possible exit.
“I am back in England,” he told Extra.
“The owner of my contract is Watford, and I have to start working with them until I see what happens with what is heard.
“That is handled by my representative with the owners, but surely in a few days, everything will be clear.”
Talk of a move away from Watford this summer has been plentiful for several months, with a whole host of clubs linked with his signature.
Liverpool and Tottenham are among that list, with José Mourinho and Jürgen Klopp both named as admirers of the 22-year-old.
That is something which hasn’t been missed by Estupiñán, who says it is a dream to have such high profile managers discussing him.
“That is a blessing from God, that they speak of you, that they have me in their mind,” he added.
“That did surprise me. That you are in the head of those coaches is a feeling that I never imagined.
“That makes me proud and motivates me to work and work. This is just the beginning.”
