Goalscorers are the most precious commodity in football. They are the most expensive and most difficult to find. So it must be very unpleasant to be in the offices at Molineux these days. Wolverhampton have signed striker Sasa Kalajdzic to score goals for them but were devastated to see the Serbian-Austrian pick up a serious knee injury on his debut for the West Midlands club. They moved quickly to find a replacement in the experienced Diego Costa, agreed terms with the former Atletico and Chelsea man – but they still cannot sign him! ##NAJAVA_MECA_6624827##Wolves’ bid to secure a proven goalscorer hit a snag after Costa’s initial work permit application was rejected. Wolves have made an official appeal and are waiting for an outcome.The former Spain international was supposed to land in England on Tuesday night and undergo medical on Wednesday morning. However, the authorities are reluctant to grant him the required permit to play professionally in England. One man’s misfortune, Diego Costa’s chance of a lifetimeCosta has been a free agent since January when his contract with Brazilian club Atletico Mineiro was terminated. This means Wolves were able to make an approach for him outside the English transfer window, which closed on Thursday.The Spain international scored 59 goals in 120 appearances for Chelsea between 2014 and 2017 and represented Atletico Madrid either side of that spell at Stamford Bridge.🚨 Diego Costa has had his work permit application rejected due to not having enough points on his application, Wolves have appealed the decision. pic.twitter.com/1C8Ld5ACIu— Sky Sports News (@SkySportsNews) September 6, 2022 Costa has been a free agent since leaving Brazilian club Atletico Mineiro in January. The Spain international scored 59 goals during a three-year stay at Chelsea between 2014 and 2017.But his lack of recent activity means he does not qualify automatically for a work permit, and Wolves now face an anxious wait to discover whether the deal can be given the green light.