Nigeria, June 25 -- Former Liverpool and England midfielder Adam Lallana has announced his retirement from professional football at 37.

He made the announcement via his Instagram page, expressing his gratitude to all the clubs he played for:

"I could not be more appreciative of the opportunities I've been given and the support I've received along the way. You owe so much to so many on a journey like this-it's impossible to name everyone, but to all those people, please know how grateful I am.

I couldn't have done it without you. It's crazy to think this all began in the last millennium, when I signed for the academy in 1999.

Since making my professional debut in 2006, I realise I've been blessed to live the dream that millions of peop...