Celtic have endured a topsy-turvy week on the transfer front.
Their hopes of winning ten titles in a row took a boost when they confirmed the news that Moi Elyounoussi had agreed another season-long loan deal from Southampton.
However, the Saints also dealt Neil Lennon's men a blow.
It was revealed that they were wanted Fraser Forster to return to the club and compete for the number one spot.
Lennon initially had hopes of bringing him back but they look to have got away from the Hoops.
The likes of Joe Hart and David Marshall have been touted as alternatives, but they also appear to be in the market for further firepower in attack.
Lyndon Dykes and Ivan Toney have been linked with now it's a striker in Germany that's attracting their interest.
The player in question is Union Berlin's Sebastian Andersson.
Guardian journalist Ed Aarons unveiled the news on Twitter suggesting that three clubs were in the race to sign the 28-year-old when the window opens.
He claims there is interest from Celtic, but Newcastle and West Brom also want to sign the forward.
Andersson is valued at £4.3m according to Transfermarkt.
GIVEMESPORT'S Matt Dawson says...
Andersson is hardly a household name but he'd certainly provide a plan B for Celtic in attack.
Odsonne Edouard is a striker that likes the ball in behind, also capable of creating a chance out of nothing.
Leigh Griffiths, meanwhile, is a tricky fox in the box, proving to be unpredictable in the way he plays.
However, Andersson is incredibly different. He is a force to be reckoned with in the air, standing at a colossal 6 foot 3.
Although he knows where the net is, scoring 13 times this season, it's with the ball off the deck that he's most capable in.
Remarkably, the forward has won 7.4 aerial duels his term, a tally that puts him above every single player already at Parkhead.
His style of play is remarkably similar to Celtic cult-hero Jan Vennegoor of Hesselink's.
The former striker was a force when it came to heading, winning 2.3 duels per match throughout his final season in football.
That's some way down on Andersson but it shows that they are both prominent when the ball is in the air.
Nick Hammond may have identified a perfect alternative plan for Celtic's attack here.