Scotland boss Craig Levein has lost another member of his squad to face Slovenia after Alan Hutton was ruled out.
Levein had seen Phil Bardsley and Matt Phillips pull out on Monday, and Hutton has now joined them on the sidelines due to a hamstring injury.
Levein has also moved to call up a replacement for the Aston Villa man, bringing in Bristol City's Richard Foster.
The former Aberdeen defender, who moved to Ashton Gate in January, is uncapped and is now in contention to make his full debut.
Foster is likely to compete with Norwich's Russell Martin to start at right-back.