Chelsea host Aston Villa on Wednesday night in the Premier League and it’s vital they try get back to winning ways.

Frank Lampard’s side have suffered back-to-back league defeats against West Ham and Manchester City, which means they sit fourth in the table looking over their shoulder.  

They welcome newly-promoted Villa to Stamford Bridge, who earned a 2-2 draw at Old Trafford at the weekend against Manchester United.

Dean Smith’s side could represent a real tough challenge for the Blues, so here are three of their key threats to watch out for:

Douglas Luiz

(Photo by Stu Forster/Getty Images)

Luiz, who cost Villa £15million (BBC) in the summer from Manchester City, is a rising talent to keep a special eye on.

The 21-year-old has managed to break into the senior Brazil squad due to his performances and is a deep-lying playmaker that will sit in front of the back four against Chelsea.

He’s going to be trying to sniff out danger in front of the defence and won’t allow the Chelsea attackers room around the box, while in possession he’s a tidy customer too.

Jack Grealish

 (Photo by Simon Stacpoole/Offside/Getty Images)

Grealish is the talisman at Villa Park that is really starting to hit to gear now and he will be a major threat at Stamford Bridge.

The 24-year-old has found real success since drifting into a wide role on the left flank and he’s got the freedom to drift inside, which is why Blues right-back Reece James could find it tough.

He now has five goals and five assists in 14 games across all competitions so far this season for Villa.

Tyrone Mings

 (Photo by Dan Mullan/Getty Images)

Mings has seen his reputation soar this season following his performances in the Premier League and he’s a colossus in the heart of the Villa defence on his day.

The 26-year-old centre-back has forced his way into Gareth Southgate’s England squad with his top-flight displays, where he’s a force in the air but also calm on the ball.

Chelsea are unlikely to get much change out of him in the air and are going to have to play it smart around the box to better the defender.

He’s also a goalscoring threat when he goes forward and scored against Manchester United at the weekend.

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