Marcos Alonso has claimed Diego Costa still carries a goal threat
Diego Costa has lost his shooting boots in recent weeks and has failed to score in Chelsea's last four Premier League games.
However, team-mate Marcos Alonso has tipped his fellow Spain international to rediscover his form in front of goal this weekend.
And the 26-year-old has warned Manchester United ahead of Sunday's clash (4pm) at Old Trafford not to take Costa lightly.
Diego Costa came close to breaking his duck against Bournemouth
"Diego has been massive for Chelsea this season," Alonso told the London Evening Standard.
"He’s scored 20 goals and that is a significant contribution.
"But it’s not just about that, with the way we play, he is very important.
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"He had another couple of chances to score against Bournemouth but no doubt next week, he’ll be there again."
"Is he a big-game player? Yes. Manchester United is going to be a tough game for us but it doesn’t matter who scores, hopefully we will get the three points.
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"We have a week to rest a little bit and then prepare, that’s what we have to be focused on these days."