Liverpool boss Jurgen Klopp says Xabi Alonso is a "standout" of the new generation of football managers.
The 42-year-old's Bayer Leverkusen team are top of the German Bundesliga, five points clear of Bayern Munich who have won the past 11 titles.
"Xabi is doing an incredible job," said Klopp on Friday.
Alonso spent five seasons with Liverpool from 2004 to 2009 and won the Champions League, FA Cup, Super Cup and Community Shield during his time on Merseyside, before successful spells at Real Madrid and Bayern.
The former midfielder took over at Leverkusen in 2022 and they remain unbeaten in all competitions this season - leading the Bundesliga, in the German Cup semi-finals and the last 16 of the Europa League.