Callum Smith would welcome a challenge from Saul ‘Canelo’ Alvarez’s team for a UK fight and Anfield would be the ideal venue, says the WBA champion’s manager and trainer Joe Gallagher. The unbeaten Liverpudlian, who holds the WBA ‘super’ belt at super-middleweight, was named as a potential opponent for Alvarez, who unified three world middleweight titles with a points win …