A round-up of the latest Arsenal news as David Raya opens up on the training secret that helped beat FC Porto and Thierry Henry likens one player to an Invincibles icon. David Raya reveals Arsenal’s trick to beating Porto on penaltiesPenalty shootout hero Raya has lifted the lid on his sublime showing in Tuesday night’s last 16 Champions League second leg win over Porto. The Gunners progressed into the quarter-finals of UEFA’s elite club competition for the first time in 14 years after a 4-2 shootout win. Arsenal trailed 1-0 following the first-leg at the Estadio do Dragao but Martin Odegaard …