The two players picked up injuries over the course of two semi-final legs against Arsenal, and while they missed the final day of the La Liga season, both are in with fighting chances of making the journey to Gdansk.
Emery has a huge call to make in between the sticks, as Geronimo Rulli did not inspire confidence during their battles with Arsenal, so Sergio Asenjo may be given the nod for the final.
Pau Torres will hope to impress his admirers in the heart of defence amid persistent links with a move to Old Trafford, and a man 11 years his senior in Raul Albiol is set to line up alongside him.
Etienne Capoue was sent off as he left the field on a stretcher during the first leg of their semi-final win over Arsenal - although he turned out in La Liga just a few days after - and he returns from suspension in time to replace Francis Coquelin in midfield.
With Chukwueze still doubtful, Manu Trigueros and Yeremy are set to continue out wide, with the latter opening the scoring against Real Madrid at the weekend in a 2-1 defeat to Los Blancos.
Gerard Moreno and his 29 goals will aim to take advantage of a Harry Maguire-less Man United defence, and despite Carlos Bacca's recent spate of goals, a well-rested Paco Alcacer may be given the nod for the final.
Villarreal possible starting lineup: Asenjo; Gaspar, Albiol, Torres, Pedraza; Trigueros, Capoue, Parejo, Yeremy; Moreno, Alcacer