The international call has come in for Spireites loanee Declan John, with the 20-year-old heading to Eastern Europe this week to represent the Wales under 21s.
The International break means the Merthyr Tydfil-born John will miss the Spireites' matches over the Easter weekend against Fleetwood Town and away at Oldham Athletic on Easter Monday.
First up, John's Wales side play away in the central Bulgarian city of Stara Zagora as the international teams square-up on Friday in the UEFA Under 21 men's qualifier, before heading to Transylvania to play Romania in a second qualifier in Mediaș on Tuesday.
John will return and be in contention for the squad for the Spireites match with Port Vale on April 2.
Danny Wilson spoke about losing his left-back: "There's no doubting that we'll miss his pace, he's done well for us since he came in so it is a loss.
"We hope that he has two very good games away, then confidence-wise he should be on a high - then we'll be hoping to transfer that into the games that we've got left.
"I'm sure Declan will be making a big contribution to us before the end of the season. We brought him in for certain reasons and he's fulfilled those for us."