A round-up of the latest Arsenal news as Mikel Arteta is told to be ‘very concerned’ and Bayern Munich striker Harry Kane praises one ‘really dangerous’ Gunners star. Leandro Trossard admits Bayern Munich showed Arsenal ‘need work’Belgium forward Leandro Trossard believes Bayern Munich showed Arsenal ‘need work’ in two key areas in the Champions League. The Gunners rescued a 2-2 draw in the first leg of their quarter-final tie on Tuesday night. Trossard scored Arsenal’s reply in the 76th minute. It was the 29-year-old’s 13th goal through 38 appearances so far this season and his fourth across …