(Reuters) - Bayer Leverkusen won their first Bundesliga title at the weekend, but the celebrations have not taken the focus from their Europa League quarter-final with West Ham United, manager Xabi Alonso said on Wednesday.

Leverkusen secured the league title with five games remaining thanks to a 5-0 win over Werder Bremen on Sunday, and despite coming into Thursday's second leg with a 2-0 advantage, their concentration is at a maximum.