The clock is ticking on a decision on Christos Tzolis' Norwich City future, with the Greek international revealing Fortuna Dusseldorf's buy option is valid until the beginning of June. 

Tzolis added another goal to his tally in Dusseldorf's 2-0 victory over play-off rivals Hamburg on Saturday, as well as teeing up Felix Kraus for the opener. 

Discourse in Dusseldorf is increasingly turning to Tzolis' future at the club. Since joining last summer from the Canaries, he has recorded 19 goal contributions in 22 Bundesliga Two matches. 

After the victory, Tzolis revealed that their is a time limit on Dusseldorf taking up their option on him, with other Bundesliga clubs reportedly monitoring his situation. 

“It’s up to those responsible and the club. I like the city, love the club a lot, the boys in the dressing room. I’ve only been here six, seven months, but it feels like it’s been two or three years," Tzolis is quoted by German outlet Express. 

“My option is valid until the end of May, so we will know how before June. It’s about my future at the club.”

Respected German title, Bild, claimed on Monday even in the event of Fortuna securing promotion to the Bundesliga they would not be able to take up a reported €5m buy option on Tzolis.

That would still make the City wide player Fortuna's second most expensive signing, and use a significant portion of an estimated €20m overall top flight budget.

Tzolis has shone since arriving in Germany and has found form to help propel Dusseldorf up to fourth in the table, one spot out of a play-off place. 

After a frustrating few seasons in Norfolk, Tzolis has rediscovered his rhythm and hit form. That has resulted in 14 goals during the course of the campaign at the Merkur Spiel-Arena. 

The on-loan City winger has revealed that a positive relationship with head coach Daniel Thioune has been the key to his transformation. 

“I feel really good and have a lot of self-confidence at the moment. I would say it is the best phase of my career so far. I am very focused. 

"The coach and I have a very good relationship, he pushes me every time and only wants the best for me," Tzolis said.

“He can get loud sometimes, but that’s part of football. You don't always have to be nice, you just have to push your players. Daniel believed in me from the first second. I've never had a coach who put so much faith in me. I really appreciate him – as a coach and also as a person."