* Host city Wroclaw scraps stadium deal with Mostostal
* Company still hoping to resolve situation
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WARSAW, Dec 30 - Joint hosts Poland's Euro 2012 preparations suffered a blow on Wednesday when one of the venue cities scrapped a deal with a company building a tournament stadium.
Wroclaw, one of four Polish cities hosting the finals, decided to end its agreement with Mostostal Warszawa MOWA.WA because of construction delays.
I have came to the conclusion Mostostal is not able to finalise the construction in the agreed time and if we continue cooperation the risk that delay would be even bigger is very high, mayor Rafal Dutkiewicz told a news conference.
Mostostal MOWA.WA, whose shares on the Warsaw bourse dropped by seven percent to 59.35 zlotys after the announcement, said it was still looking to rescue the 730 million zlotys ($253 million) deal.
We hope this whole situation resolves in a positive manner, media officer Kinga Drozd told TVP Info. We will do everything to continue building this stadium.
The announcement casts another shadow over the preparations of joint hosts Poland and Ukraine.
UEFA, European soccer's governing body, has been frustrated by the slow progress of work in Ukraine and in May gave the country's four cities six months to show significant improvement.
Michel Platini, UEFA's president, also spoke of huge Ukrainian problems over airport infrastructure, transport networks and suitable accommodation for the massive influx of fans.
Poland had previously been praised for its preparations and Wednesday's news was the first real sign of problems in that country.
Neither the football association (PZPN) nor PL.2012, the government agency handling preparations, were available for immediate comment.
The tournament will be held in the Polish cities of Warsaw, Wroclaw, Poznan and Gdansk and Ukraine's Kiev, Lviv, Donetsk and Kharkiv.
(Reporting by Patryk Wasilewski, editing by Tony Jimenez. To query or comment on this story email firstname.lastname@example.org)