Mikel Arteta has praised one Arsenal player for doing something ‘nobody expected’ against Brighton last night. Arsenal put in yet another dominant display on the road as they picked up a 3-0 win at the Amex Stadium on Saturday evening. Bukayo Saka made no mistake from the spot after Gabriel Jesus was brought down by Tariq Lamptey in the 33rd minute. Kai Havertz and Leandro Trossard wrapped up the win with second-half goals as the latter netted a delightful chip at his old stomping ground. Havertz has received plenty of praise after another encouraging performance while leading the line for Ars…