England v Argentina: Marcus Smith, Owen Farrell & Manu Tuilagi set to take on Pumas

When England face Argentina on Sunday, Marcus Smith, Owen Farrell, and Tuilagi will be in the middle.

Farrell and Tuilagi are expected to be available for the game.

"Owen is doing well so far," said the backs coach.

We will know very soon that he is coming towards the end of his return to play.

Farrell missed last week's training camp in Jersey but has been working through the return to play protocols after sustaining a head injury.

While Farrell still needs to pass the final part of the process, Gleeson is happy to have his first choice in the middle.

"Marcus is a bit of a livewire and can play what he sees and you have Owen, who is very good at arranging and good at playing at the line," he said.

You want your best players on the park, and you want the combinations on the park that will be best for England.

Tuilagi's workload is being closely managed by the England staff and he is expected to be available for the Argentina game.

Smith and Farrell are going to resume their partnership after the successful tour of Australia.

Both of them are very, very good players with slightly different styles but an understanding of how they can complement each other.

I'm excited to see it grow. We want to go to the next level.

Ellis Genge and Jack Nowell have assumed increased leadership responsibilities if Farrell is declared fit to return to the captaincy.

A lot of men have stepped up. Some leaders came to prominence on the Australia tour.

Ellis Genge and Jack Nowell were great, as were the other two.

Owen is a leader regardless of whether he is captain or not, there are a lot of guys stepping up.

After making a rapid recovery from an elbow injury, wing Jonny May has been added to the England squad.

At least one of the three forwards will make their international debut on Sunday.

The matchday squad will be confirmed on Friday.

England's retained squad for Argentina Test

Forwards

Tom Curry, Ellis Genge, Joe Heyes, and David Ribbans are all from Northampton.

Backs

Owen Farrell (Saracens), Joe Cokanasiga (Bath Rugby), Jack Nowell (Exeter Chiefs), Henry Slade (Exeter Chiefs), Marcus Smith (Harlequins) and Manu Tuilagi (Sale) are all members of the England squad.