Bayern Munich and Schalke are understood to be the two clubs in the frame and Appiah admits he could be tempted by such a challenge.
"There are two clubs in Germany who have made contact," he explained. "My heart still hopes to play in the Premier League, but the German league is also quality.
"There are players such as Ribery who you want to play with, or against.
"But it will all be sorted this week."