CELTIC are lining up a rematch of the 2003 UEFA Cup Final with talks taking place over a summer friendly with Porto.
Gordon Strachan's men are already heading to Portugal to take part in the Algarve Challenge Cup.
That will be a four-team tournament with Cardiff City, Middlesbrough and Vitoria Guimaraes joining the Hoops.
But Celts look set to remain in the country for a clash with Porto in the Dragao Stadium.
And if the match gets the green light it will be the first time the sides have met since Porto lifted the UEFA Cup with a 3-2 victory over Celtic in Seville five years ago.
Strachan's side are also set to take part in a four-team tournament in Rotterdam on the first weekend in August.
That event will mark Feyenoord's centenary year.