BERLIN (Reuters) - Bayer Leverkusen will look to maintain their steady course towards a first Bundesliga title with a win at struggling Cologne in the Rhein derby on Sunday amid growing speculation over the future of coach Xabi Alonso at the club.

Alonso's undefeated league leaders are eight points clear of second-placed Bayern Munich, who visit Freiburg on Friday, with 11 matches left this season, and the Spaniard has quickly emerged as a major transfer target for top European clubs.