Arsenal have confirmed the signing of midfielder Krystian Bielik from Legia Warsaw for an undisclosed fee. Arsenal have confirmed the signing of midfielder Krystian Bielik from Legia Warsaw for an undisclosed fee. Arsenal have confirmed the signing of midfielder Krystian Bielik from Legia Warsaw for an undisclosed fee. Arsenal have confirmed the signing of midfielder Krystian Bielik from Legia Warsaw for an undisclosed fee. Arsenal have confirmed the signing of midfielder Krystian Bielik from Legia Warsaw for an undisclosed fee.