Manu Tuilagi and Marland Yarde have been recalled to the England squad for this Sunday's Six Nations clash with Wales at Twickenham.
The centre made his comeback from a five-month lay-off with an chest muscle injury in Leicester's Aviva Premiership victory over Newcastle on Sunday.
He proved his fitness with a typically powerful display and England coach Stuart Lancaster saw enough to decide to recall him for the crunch crash with Wales.
London Irish winger Yarde has been out of action since late November with a hip injury and he adds to Lancaster's back-three options.
Lancaster admits both players will have to produce something spectacular in training before the team is announced on Friday to play in the penultimate match of this year's campaign.
"They'd have to go some in the next couple of days, it's fair to say," he said.
"It's a big ask for Manu to come back having had such a long period out.
"He hasn't had any time with us in camp whatsoever, so Tuesday will be the first training session he's done since the Wales game last year."
England's 34-man squad will assemble at Pennyhill Park on Monday.
Forwards: David Attwood (Bath), Dylan Hartley (Northampton), Matt Kvesic (Gloucester), Tom Johnson (Exeter), Joe Launchbury (Wasps), Courtney Lawes (Northampton), Joe Marler (Harlequins), Ben Morgan (Gloucester), Matt Mullan (Wasps), Chris Robshaw (Harlequins), Ed Slater (Leicester), Henry Thomas (Sale), Mako Vunipola (Saracens), David Wilson (Bath), Tom Wood (Northampton), Tom Youngs (Leicester)
Backs: Chris Ashton (Saracens), Brad Barritt (Saracens), Mike Brown (Harlequins), Freddie Burns (Gloucester), Luther Burrell (Northampton), Danny Care (Harlequins), Lee Dickson (Northampton), Kyle Eastmond (Bath), Owen Farrell (Saracens), George Ford (Bath), Alex Goode (Saracens), Jonny May (Gloucester), Jack Nowell (Exeter), Manu Tuilagi (Leicester), Billy Twelvetrees (Gloucester), Anthony Watson (Bath), Marland Yarde (London), Ben Youngs (Leicester)