Twente are looking at options should Orlando Engelaar leave the club this summer.
Engelaar is being tracked by a host of Europe's top clubs with Porto joining the queue of teams checking him.
Twente do not want to lose their captain but Engelaar looks as if he could be leaving.
Twente have turned their attention abroad and one of the names said to be attracting them is Petter Andersson.
The 23-year-old Swedish international is currently with Hammarby.
Meanwhile, Twente have handed a trial Australian striker Robbie Kruse.
The 19-year-old is currently is currently with Queensland Roar.