Unless Hazard, De Bruyne, Mertens, Carrasco and Origi are injured, they are all but guaranteed to be above Mirallas in the pecking order in the future as well imo. While there's a possibility of Mirallas having a better season than Chadli (due to Chadli having stronger competition for a starting spot at his club), I think Chadli is a better player than Mirallas as well. And if they do need to add another winger to the squad, I think it's becoming more likely that they'd give Musonda a chance rather than recall Mirallas.