Stuttgart striker Cacau is a Bosman target for Bolton Wanderers.
The Sunday Mirror says Cacau rejected a three-year contract extension at Stuttgart in order to find a new challenge and Bolton manager Owen Coyle has taken note of the situation.
Coyle will be active in the transfer market this summer in order to establish his side as a top 10 team.
Money is tight, which makes Cacau a good signing, but Coyle will have to see off Wolfsburg and Sevilla.