Leeds fans were certainly impressed with Kalvin Phillips' performance against Cardiff City.
The Gunners legend believes victory over Jose Mourinho's side would cause them concern in the title race.
The former Magpies midfielder believes that without their former manager, Newcastle's season may have had a different conclusion.
The centre-back replaced the injured Ciaran Clark in the first-half at White Hart Lane and went on to help his side earn a crucial 1-0 win.
Lionel Messi found the net as Barcelona drew 2-2 at Sevilla.
The former Seattle Sounders defender came on in the 79th-minute of his side's 1-0 home defeat to Aston Villa.
The winger scored a fantastic hat-trick at the Stadium of Light.
Cardiff City supporters didn't turn up to Elland Road on Saturday afternoon as their side beat Leeds.
The Gunners legend has praised the midfielder after another fine performance.
The Aston Villa loanee was not pleased to have lost the game at the City Ground.