Jota joined Brentford from Spanish club Celta de Vigo in the summer of 2014 and established himself as one of the most important players for the Bees.
The 23-year-old scored 11 goals and created 56 chances in 43 Championship appearances in the 2014-15 campaign.
The Spaniard had a pass accuracy of 79% and a shot accuracy of 59%, and he won 12 headers, 54 dribbles and 34 tackles.
Derby finished eighth in the Championship with 77 points from 46 matches, missing out on a playoff spot by just a point.
Brentford ended the ‘regular’ season in fifth spot and featured in the playoffs, where they failed to get the better of Middlesbrough.