The duo has previously been banned for the Scottish national team.
Smith is working to find a replacement for George Burley who was sacked from his job as Scotland boss on Monday.
“The new manager will have a say in who he wants to play,” he said on Sky Sports News.
“The manager has a decision on all forms of dealing with the discipline. The manager will be totally responsible for decisions in disciplinary matters.
“They will be given licence to pick who they want and that goes for any player.”