Dudka has been training with the Championship outfit after recovering from injury, and Clark has revealed that he has been impressed with the Poland international since he arrived at the club.
The 40-year-old told the Birmingham Mail: "He has got 65 international caps for Poland. He had an injury-hit season last year with Levante. Before that, he played for Auxerre in the Champions League.
"He has got a very good international pedigree and he was told that had he had a club and been fit from the start of the season, he would have probably played against England at Wembley on Tuesday.
"He has come in and done well in training and we will have a look at him on Monday."
Dudka is expected to play some part for the club's development team against Huddersfield Town on Monday.