Serie A side Pisa have reportedly held further talks with Celtic target Calvin Stengs.
The 26-year-old could depart Feyenoord this summer, and the Parkhead club have been linked with a move.
Sky Sports, however, claims that Pisa have held further talks with Stengs and are pursuing a loan deal for the attacker.
Celtic are said to have explored the conditions of a transfer earlier this month and are more likely to follow up their interest if they make it through to the Champions League proper.
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They take on Kairat Almaty in the second leg of their play-off tonight, with the tie poised at 0-0 on aggregate.
For tonight's match, Kairat will be without Brazilian striker Edmilson. Sports.kz reports that the 28-year-old, who started last week, has been injured in training and is 'practically' ruled out.
Kairat were already due to have Alexander Zarutsky and Giorgi Zaria unavailable, as well as Chelsea-bound wonderkid Dastan Satpayev, who is suspended.
"There's no excuse for us," said manager Brendan Rodgers, when asked whether the long journey and heat could impact his side's chances of progression.
"Especially when you see how well Kairat worked last week. They had the same journey going the other way.
"So that won't be an excuse for us. And I think, as I said, we all feel fine, we feel great, we're on our own time zone and like I say, we'll prepare and there'll be no excuse."