Arsenal are targeting a defender to address their lack of defensive depth, and have now been linked with Roma defender Leonardo Spinazzola. The 30-year-old is out of contract at the end of the season, and seemingly has no intention of signing a new deal, putting clubs on high alert during the January transfer window. Arsenal have been linked alongside Unai Emery’s Aston Villa, but it is currently unclear what kind of fee would be needed to land him now, or whether the clubs are prepared to wait until the end of the season. Arsenal are interested in Leonardo SpinazzolaA report from Rome-based o…