[3] In the 2018–19 season, he shared the same office with set-piece coach Nicolas Jover,[4] who would join Premier League club Arsenal in July 2021.

[5][6] Caña played a major part in Spanish goalkeeper David Raya's transfer from Blackburn Rovers to Brentford in the summer of 2019.

[8] Caña and Raya remained friends,[7] and the latter went on to share the 2019–20 Championship Golden Glove award with Millwall goalkeeper Bartosz Białkowski,[9][10] and helped the Bees get promoted to the Premier League in the following season via the play-offs.

[7][11] Raya claimed the Premier League Golden Glove award in his debut campaign with the Gunners,[24][25] then completed his permanent move to Arsenal in July 2024.

[26][27] In an exclusive interview with Sky Sports on 14 August 2024, Raya credited Caña for the role he played in his development at both Brentford and Arsenal.