Manchester United signed Lukaku in a £75m deal from Everton in the summer transfer window to bolster Jose Mourinho’s attacking options ahead of the new season.
The Belgian forward has wasted no time scoring six goals in six games in the Premier League to move level with Alvaro Morata at the top of the goal-scoring charts.
Indeed, Chelsea summer signing Morata netted a hat-trick in his last Premier League appearance to take his tally to six goals ahead of their clash against Manchester City on Saturday evening.
Tottenham striker Kane failed to get on the score sheet in August but the England international has scored eight times this month including a hat-trick in the Champions League on Tuesday night.
Former Liverpool defender Carragher believes Kane, Lukaku and Morata need to perform at a major tournament or fire their club to the latter stages of the Champions League to be considered world class like Luis Suarez and Robert Lewandowski.
“At this time there’s Suarez, Lewandowski, Neymar and the other two, who we can’t even mention because they are so far ahead of the rest,” Carragher told Sky Sports.
“Lukaku, Morata and Kane are just below that level but they are still young men. Over the next few years if we see them do it at a major tournament or the Champions League that’s when you’ll say they are world class.”
Chelsea will host Manchester City in their next Premier League game in what will be a real test of Morata’s quality.
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