* Rome offers 70% tax breaks to Italians returning from abroad. : LONDON/MILAN(Reuters) - Investment firms, including buyout fund EQT, are flocking to Milan to develop closer ties with Italy Inc, where cash-starved family-owned companies are increasingly seeking foreign capital to boost growth. The search for real estate in the financial capital of the euro zone’s third largest economy comes as uncertainty around Britain’s departure from the European Union and lucrative tax incentives tempt Italian dealmakers living abroad to pack up and head home.