By Foo Yun Chee BRUSSELS (Reuters) – Telefonica will win EU approval for its 8.6-billion-euro ($11.7 billion) bid for KPNs German unit E-Plus after agreeing to let smaller rivals in Germany piggyback on its mobile network, two people with knowledge of the matter said. To secure EU approval for the E-Plus deal, Telefonica – Europes biggest telecoms provider by revenue – will allow some smaller operators to lease at least a fifth of the combined companys network capacity, the sources said. The European Commission will clear the deal, said one of the people, who declined to be named because the European Union decision is not yet public. The concessions could help up to three smaller operators, so-called mobile virtual network operators (MVNOs), following regulator concerns that the merger would reduce competition in Europes biggest telecoms market, the sources said.