If Arsenal signing Kai Havertz from Chelsea was a big ordeal, then the Gunners bringing Raheem Sterling to north London would be astronomical. Arsenal are in the market for another winger right now, Mikel Arteta reportedly wants better competition for Bukayo Saka on the right. Leandro Trossard was superb against Aston Villa – a performance that Gary Neville said ‘made him wince’. But Arsenal would benefit from better strength in depth in wide areas, and Sterling does appear to be a very sensible option. Enzo Maresca has made it very clear that Sterling is not in his plans at Chelsea, opening t…