Celtic knocked back significant interest in midfielder Matt O’Riley in the winter transfer window as Brendan Rodgers showed determination to keep his star man. La Liga giants Atletico Madrid tested the Hoops’ resolve in an initial loan offer that contained an obligatory clause to purchase the 23-year-old in the summer. Rodgers came out soon after, quelling any notion that the Denmark international would be heading to the sunnier climbs of Spanish football. The Irishman stated [Sky Sports]: “There was that, but Matt is a player we don’t want to lose and he won’t be going anywhere in January. It…