Former Bromsgrove School pupil Mullan, a product of the Sixways Academy, missed three months of action after suffering a hamstring injury against Montpellier in the Amlin Challenge Cup in early October.
But the 22-year-old is now back in the Warriors squad and set to feature in Saturday's game with Olympus Rugby XV Madrid.
Mike Ruddock, Director of Rugby, said: "It is fantastic news for Matt that he has been named in the England Saxons EPS.
"With the injury to Andrew Sheridan, it looks like Matt is now well positioned to get a senior call-up for the start of the Six Nations, once he proves his fitness to the selectors.
"This would be great news for us as it would add to our achievement of getting Alex Grove capped by Scotland in the autumn internationals.
"With a World Cup not too far away, this is a great step forward for him and I'm sure he will grasp it with both hands. I would also expect some of our other younger players to push hard to gain recognition, in particular players like Tom Wood and Miles Benjamin."
ENGLAND SAXONS EPS
David Attwood (Gloucester Rugby)
Duncan Bell (Bath Rugby)
George Chuter (Leicester Tigers)
Dan Cole (Leicester Tigers)
Alex Corbisiero (London Irish)
Phil Dowson (Northampton Saints)
Ben Kay (Leicester Tigers)
Nick Kennedy (London Irish)
Matthew Mullan (Worcester Warriors)
David Paice (London Irish)
Tom Rees (London Wasps)
Chris Robshaw (Harlequins)
Andy Saull (Saracens)
George Skivington (London Wasps)
Dan Ward-Smith (London Wasps)
Rob Webber (London Wasps)
Nick Wood (Gloucester Rugby)
Ben Woods (Leicester Tigers)
Chris Ashton (Northampton Saints)
Brad Barritt (Saracens)
Danny Cipriani (London Wasps
Shane Geraghty (Northampton Saints)
Charlie Hodgson (Sale Sharks)
Stephen Myler (Northampton Saints)
Olly Morgan (Gloucester Rugby)
Paul Sackey (London Wasps)
Joe Simpson (London Wasps)
David Strettle (Harlequins)
Dominic Waldouck (London Wasps)
Richard Wigglesworth (Sale Sharks)
Mickey Young (Newcastle Falcons)
Tickets for the England Saxons v Ireland A game at Bath Rugby's Recreation Ground on Sunday, January 31 (kick off 2.30pm) are available priced £17 for adults and £7 for children by calling 0844 448 1865 or by contacting www.ticketmaster.co.uk. England Saxons play Italy A in Treviso, Italy on Sunday February 7 (kick off 1.30pm local time).