Ashley Williams believes new Chelsea star Diego Costa can take the club to a new level after his stunning start to the season.
Costa has scored seven goals in four league appearances for Jose Mourinho's side since joining in a £32 million deal.
Having missed out on the Premier League title due to the lack of a true goalscorer, Mourinho acted fast to bring in Costa from La Liga champions Atletico Madrid and Williams believes he could make the difference.
Speaking exclusively to GiveMeSport, Williams said: "He is a proper striker who has a bit of everything and i think for Chelsea he can probably take them to the next level."
Williams admits frustration
Williams experienced last weekend exactly what Costa brings to the table, with the Spain international scoring three times at Stamford Bridge to condemn Swansea to a 4-2 defeat.
The Swansea captain said: "He is a good player, but it's a frustrating one as a defender when you felt like you kept him quiet and he still scored a hat-trick.
"They are goals that you couldn't do much about and as a team we conceded off a set piece which was disappointing. They had a lot of pressure so something had to give and he popped up with a hat-trick.
"Playing against those types of players is great, week in week out its just part of the challenge."
You get what you pay for
Having lost their 100 percent start to the season at the hands of the former Atletico striker, the 30-year-old defender believes Chelsea have got exactly what they paid for with his acquisition.
He said: "From the footage I saw of him before the game he does a lot, but when I came up against him he didn't seem to do too much in general. But he’s so clinical.
"He didn't have many other chances, I can't really remember him having any other chances but you know he had three or four chances and scored three, that’s what you pay the big money for."
It's only early days in his Chelsea career but Costa has already endeared himself to the Chelsea faithful, scoring in his first four games for the club. But the real test will be to see if he can continue to have an impact as the season progresses.
Williams added: "We'll have to see really how he pans out over the season, but i think he will definitely be top class."