Derby County have shown an interest in Oxford United winger Josh Murphy and now his father has dropped an update on his future. Paul Warne is looking to bolster his Derby squad with attacking quality ahead of a gruelling Championship campaign. The Rams scored the joint-fewest goals of sides that finished in the top six of League One last term, so firepower is a must if they are to remain in the division. Derby have been linked with Charlton Athletic goal machine Alfie May, Sheffield Wednesday striker Josh Windass while we exclusively revealed that Oxford winger Josh Murphy is of interest. The …