Will Greenwood told the Rugby Club that he is thrilled to see former rugby league stars Kyle Eastmond and Joel Tomkins named in England's Saxons party.
Bath wing Eastmond and Saracens centre Tomkins, who switched codes in 2011 from St Helens and Wigan respectively, have been included in the squad that will tackle the Irish Wolfhounds on January 25 and Scotland A on February 1.
"Eastmond is a genuine gain-line breaker and it give us a chance to see where we might fit him in (to the full international team)," said Sky Sports pundit Greenwood.
"Tomkins starts a lot of games for Saracens, even though he often gets taken off after 60 minutes, is a big lad, carries well, has one-handed offloads and is another guy who is worth keeping an eye on.
"I have been really impressed by his adaptation from league to union."
Billy Twelvetrees, Calum Clark and a fit-again Tom Croft were selected in England's 33-man Six Nations troop.
But Greenwood says he is more excited about the positivity in the camp following December's eye-catching victory over New Zealand.
"You can quibble a little over players; I still think there is a reason to have Nick Easter in the squad and there is still an argument for some of the foreign-based players," added the former centre.
"But I look more at the mood of the squad; people are now desperate to be involved and a buzz has been generated by that win over the All Blacks.
"It is now less about the individual and much more about the mood; England have a top-class culture and feel they can do special things."
Erstwhile Wales wing Ieuan Evans added: "The thing that jumps out to me about England's squad is adaptability; there are a number of players who can play in multiple positions.
"With Twelvetrees, Ben Foden and Mike Brown there is more flexibility and England now have a different way of playing if they so choose."