PARIS, Nov 24 (Reuters) - Stephane Richard, the head of France"s biggest telecoms company Orange (ORAN.PA), was convicted Wednesday of complicity of misuse of public funds by a Paris appeals court. The case dated back to a 400 million-euro ($449.8 million)French state payout to the late business tycoon Bernard Tapie in 2008. At the time, Richard was chief of staff to then finance minister Christine Lagarde, who now presides over the European Central Bank (ECB). Lagarde was convicted of negligence over the affair in December, 2016. read more ($1 = 0.8894 euros)