Matildas star Sam Kerr has signed a two-and-a-half-year contract with English heavyweights Chelsea on a deal reportedly worth more than $600,000 a season.

Key points: Sam Kerr will play the second half of the Women's Super League with Chelsea

Sam Kerr will play the second half of the Women's Super League with Chelsea Kerr said her motivation to move to Chelsea was to "lift some trophies"

Kerr said her motivation to move to Chelsea was to "lift some trophies" She had been sharing her club commitments between Australia's W-League and the Nation Women's Soccer League in the US

Kerr will link up with the Blues when the mid-season transfer window opens, meaning she will play out the second half of the FA Women's Super League (WSL).

The 26-year-old striker had previously shared her club football commitments between Perth Glory in the W-League and Chicago Red Stars in the National Women's Soccer League (NWSL) in the United States.

"The WSL is the best league in Europe," Kerr said in a statement.

"I want team success and I don't want it to come easy.

"I feel Chelsea have been building something special over the years and I want to be a part of that. I want to lift some trophies."

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Kerr is taking a three-week holiday before linking with Chelsea.

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"Sam has proved time and time again in the NWSL that she is a prolific goal scorer," Chelsea FC Women manager Emma Hayes said in a statement.

"She's won the golden boot many times and she's a player that can make things happen, but she's also a fantastic team player.

"The fact she chose Chelsea when she could have gone to any club in the world is a testament to the players and the staff here.

"Because she saw this is the best place for her to grow and take the next step in her career. That's a wonderful compliment to us all."

Kerr has become the face of Australian women's football since debuting with the Matildas at the age of 15.

The dynamo played a key role in Australia's sweep of the just-completed two-match friendly series against Chile — she scored a brace in a 2-1 win in the opener in Sydney last Saturday, and set up the match winner in a 1-0 triumph in Adelaide on Tuesday night.

Kerr has been a part of the Matildas set-up since she was 15. ( AAP: Dan Himbrechts )

Kerr had been weighing up her club future since opting against returning to the Glory.

She had been splitting her time each year between the Glory from October to April, then the Red Stars from April to September.

After Tuesday night's victory over Chile in Adelaide, Kerr conceded the gruelling schedule had led to near-exhaustion.

ABC/AAP