K. Tierney "Arsenal" team will not help this season © JumpStory

Kieran Tierney and Arsenal have received bad news from the doctors. The Athletic journalist David Ornstein reported that Arsenal's main left-back will have to undergo surgery this week. Kieran Tierney will have a knee operation, which he injured during the international break with Scotland, playing in a friendly match. It is likely that this injury will prevent the 24-year-old defender from helping his national team, which will be fighting for a spot in the World Cup. Scotland will face Ukraine, and in the qualifying final they may have to compete against Wales. Arsenal already played their last match without K. Tierney. The Gunners lost, so these two days are not easy for a team fighting for a place in the top four.