LONDON, Feb 12 — Arsenal boss Mikel Arteta described Thomas Frank as “extraordinary” after the Dane was fired by Tottenham yesterday, but said football managers are all vulnerable to the sack.

Frank was dismissed after just eight months in charge following a 2-1 home defeat to Newcastle on Tuesday, which left Spurs just five points above the Premier League relegation zone and without a win in their past eight top-flight games.