The clash with Romania will take place at Glanford Park on Sunday October 14, with Doncaster and Barnsley also hosting matches
"They will be tough as it's three intense games in a short space of time," said Eastick.
"But there will also be more time to work with the players on the training ground and get the little things right."
England beat Belarus 4-0 in their last outing, a friendly at Meadow Lane where Cork - on loan with Scunthorpe from Premier League side Chelsea - playing the full game at right-back.
"We came out of the blocks quickly and played some great football, which was very pleasing," added Eastick.
Squad in full: Marc Albrighton (Aston Villa), Sone Aluko (Birmingham City, on loan at Aberdeen), Ryan Bertrand (Chelsea, on loan at Oldham), Fabien Brandy (Manchester United), Andy Carroll (Newcastle United, on loan at Preston), Jamie Chandler (Sunderland), Ciaran Clark (Aston Villa), Jack Cork (Chelsea, on loan at Scunthorpe), Simon Eastwood (Huddersfield), James Henry (Reading), Sam Hutchinson (Chelsea), Joe Mattock (Leicester), Tope Obadeyi (Bolton), Krystian Pearce (Birmingham City), Lee Sawyer (Chelsea), Scott Sinclair (Chelsea), Jason Steele (Middlesbrough), Josh Wright (Charlton, on loan at Barnet)