KENNY DALGLISH has fired Rangers a must-win warning ahead of their Europa League final against Frankfurt on Wednesday.

Giovanni van Bronckhorst's team have would land an automatic Champions League group stage spot if they claim victory and Dalglish insists this could be vital in their domestic battle with Celtic.

The Hoops are already booked into the group stages after winning the Premiership title this season and the financial gain is a massive plus point for Ange Postecoglou's side.

Dalglish wrote in his Sunday Post column: "Right now, you’d have to fancy my former club to win the title again.

"But it’s so, so tight between Celtic and Rangers. There is very little between both teams, as the last three Old Firm games have shown.

"Rangers may well also have financial riches to come their way if they win the Europa League on Wednesday night.

"That will make it all the more interesting, for sure. But Giovanni van Bronckhorst ’s men need to deliver.

"If they don’t, Celtic would likely have a significant financial advantage. Having that kind of power may lead to them being way out in front.

"It all makes for an interesting summer, and hopefully it leads to a tight title race."