Eddie Jones is hopeful that Courtney Lawes will recover from his knee injury in time to start England's clash with South Africa on Saturday week.

Lawes was a late withdrawal from Northampton's matches against Montpellier and Gloucester due to bruising on the joint and had effectively been ruled out of the Old Mutual Wealth series opener at Twickenham by his director of rugby Jim Mallinder.

But Jones is 'cautiously optimistic' the 27-year-old will be passed fit as England seek to extend their flawless record under the Australian to 10 Tests.

Eddie Jones was in a good mood when he spoke from England's training base on Monday

Jones discusses England's injury crisis with journalists in Vilamoura, Portugal

The Red Rose boss is optimistic that lock Courtney Lawes (left) will shake off a knee injury

The injury crisis which has thinned Red Rose ranks has accounted for first choice second rows Maro Itoje and George Kruis, so Jones can ill-afford to lose another option in the position.

'Courtney's medical situation is ongoing. He probably won't train much this week, if at all. We're cautiously optimistic he'll be all right for the South Africa game,' Jones said.

Lawes' Northampton team-mate Dylan Hartley faces a challenging week during the five-day training camp in Portugal as he seeks to improve his fitness before leading England against the Springboks.

Hartley has made one start and one replacement appearance since recovering from a back problem and needs to prove to Jones he can get up to speed.

'We'll see if Dylan is ready at the end of the week,' Jones said at the squad's hotel in Vilamoura.

'We'll have a good week's training so we'll know where every player is in terms of how ready they are to play international rugby.'

Injury has robbed England of the services of Maro Itoje (left) and George Kruis

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England have been robbed by injury of 10 players for the entire series that continues with fixtures against Fiji and Argentina and concludes against Australia.

'Rugby is a physical, contact game. England pride themselves on having depth so this is a great opportunity to show how much depth we've got,' Jones said.

'We've got an absolute plethora of injuries so we're trying to work out who is going to be right and who isn't.