Telefonica Deutschland has sweetened its offer of concessions in order to win European Union approval for its planned takeover of KPNs E-Plus unit in Germany, a spokesman for the German telecoms provider said on Thursday. As is usual in such processes, we have now filed a modified remedy package with the European Commission, which is based on the first market test. We cannot comment on any details of the remedies, spokesman Albert Fetsch said. Telefonica Deutschland, a unit of Spanish telecoms operator Telefonica, last month offered to lease spectrum and access to its network to rivals after the EU antitrust authority expressed concerns about the 8.6 billion euro ($11.9 billion) deal.