Manchester City manager Pep Guardiola has given the green light for Sergio Aguero to join Chelsea, according to Spanish journalist Manu Sainz.

What's the word?

It has become clear that the Premier League champions are on the hunt for another striker, particularly as Diego Costa is likely to leave this summer.

Romelu Lukaku was heavily tipped to return to Stamford Bridge, but instead, he joined Manchester United in a £75m deal.

Real Madrid striker Alvaro Morata, Torino hitman Andrea Belotti and Borussia Dortmund attacker Pierre-Emerick Aubameyang have been linked to Chelsea, and now it appears that Aguero is on the list.

Spanish journalist Manu Sainz tweeted on Sunday that City manager Guardiola would allow the Argentine to move to Stamford Bride.

He wrote: "They tell me that Chelsea want to Kun Aguero. Guardiola would have already given the ok to operation…"

If true, it is a risky move from Guardiola, but the ex-Barcelona boss may feel that young talent Gabriel Jesus is more worthy of a starting spot this season.

The Brazilian ousted Aguero from the first XI when he arrived at City in January, and if it were not for injury, the 20-year-old may have had a longer spell as first choice.

Is Aguero right for Chelsea?

The 29-year-old's quality is sometimes overlooked, but he has consistently provided goals since his arrival in England in 2011.

After joining from Atletico Madrid, Aguero has hit double figures in every Premier League season.

In total, the striker has scored 122 goals in 181 appearances in the top flight, and he would certainly be a good replacement for Costa.

Chelsea would have been disappointed to miss out on Lukaku, but bringing in a striker who is proven and well-adapted to English football is a strong alternative.

Aguero has suffered with muscular problems in the past few seasons, and will be entering his 30s next year, but he is guaranteed to score goals for the Blues.

WATCH THE LATEST 442OONS VIDEO BELOW...