Chelsea star Morgan Rogers arrived at Stamford Bridge having established himself as one of the Premier League's leading young attacking talents

Glen Johnson believes Morgan Rogers still has plenty to prove and explained why he isn’t totally sold on the Chelsea star. Rogers moved to Stamford Bridge during the summer transfer window in a £117m move from Aston Villa.

And the England international has hit the ground running with his new club, scoring four times in eight appearances in all competitions. Rogers also has four assists to his name, and was on target in last Saturday’s 5-1 home victory over Bournemouth.

However, Johnson, who made 71 appearances for the Blues, believes given the huge fee his old side paid, they should be seeing more from the 24-year-old.

"I'm not totally sold just yet on Morgan Rogers,” he told PariuriX. “Obviously he's a great player and he's done very well but you don't become a world class player in six games.

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“I'm not saying he can't go on to do that but you definitely need to do it for a number of seasons, and for the whole season. He's looked great, he's got a huge price tag. I wouldn't say he's gone down as the best signing yet.

“Listen, if we're sat here at the end of the season and he's scored twenty odd goals and Chelsea have had a great season, then fair play.

“But to start making those calls after six games, I think it would be very premature. The price tag plays a role of course, especially as Chelsea didn't need to spend that kind of money in that position.

“(Maxence) Lacroix, the centre-back, they needed him more and he was £52m. To me, that was a better signing because you needed that position more and you've done clever business by getting him for around £50 million.

"I know attacking players naturally have a higher price tag and that's not Morgan's fault. In terms of a £117 million signing, you kind of expect four goals (so far this season).

“Which is kind of a pressure on him he doesn't deserve because he didn't choose the price tag. All he can do is keep improving his game and let everybody talk around him and not get pulled into it.

"Maybe I am saying that because it was £117 million, but he still has plenty to prove. But listen, I hope I'm wrong and he scores 20 odd goals and continues to do it for four or five years and I'll say he's worth every penny."