Johnson admits several members of his squad for tomorrow's clash with the Barbarians and the Test series against Argentina were disappointed to miss out on initial selection.

But the England manager expects nothing less than complete concentration as they seek to keep themselves in the shop window.

"Guys like Delon [Armitage], Mark Cueto and Steve Borthwick are disappointed as they had every chance of making the original Lions squad," he said.

"But the Lions haven't even played a game yet and if someone on that tour does get hurt then the best place for guys like Delon to be is with us playing well.

"But all of my players are fully concentrated on England. Of course they want to be with the Lions but I know they'll give us everything they can for England."

Johnson views tomorrow's clash against a star-studded Barbarians line-up containing 632 caps as ideal preparation ahead of the series against Argentina.

"We're going into this match with two tough Tests in Argentina ahead of us," he said.

"The players we have to pick from have been reduced because of the Lions and injuries but this is an opportunity for us to see some other players who are back or who have missed out on selection.

"It's a good game to have as preparation to play Argentina."

The Barbarians open a series of three matches for England, who host Argentina at Old Trafford a week later before heading to Salta to face the Pumas in the second Test on June 13.

Johnson is expected to reduce the size of his 34-man squad after the Barbarians match.