Chelsea striker Romelu Lukaku has made Jose Mourinho appear even more foolish for allowing him to leave the club on loan, with the teenager scoring twice for Belgium before half-time in their pivotal World Cup qualifier with Croatia.

Belgium require only a point on Friday evening to confirm their place in Brazil next summer, and got off to an ideal start as Lukaku placed them firmly in control of the match with a brace inside 40 minutes.

The first goal from Lukaku, who is currently on loan at Everton, was provided by Chelsea clubmate Eden Hazard, who threaded an expert pass through the Croatia defence, which allowed the former to round the keeper and tap home.

Lukaku's second strike was completely of his own doing, as the Chelsea starlet powered his way from the Belgium half, outmuscling the opposition defence and sliding the the ball underneath Stipe Pletikosa.

The former Anderlecht forward has been in fine form this season, having found the net four times in three appearances for Everton since his temporary move from Chelsea on deadline day.

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