The 22 - year - old Belgium international initially joined the Merseysiders on loan before Mourinho gave him the green light to make the switch permanent .
The 22 - year - old Belgium international has scored 15 goals in all competitions so far this season .
The 22 - year - old Belgium international , who has scored 15 goals in all competitions so far this season , initially joined the Merseysiders on loan before Mourinho gave him the green light to make the switch permanent .