April 20 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 1030 GMT on Friday: ** Several assets of German energy firm Innogy have attracted the interest of an outside investor, the group said on Friday, a month after parent RWE disclosed plans to break up the group with rival E.ON. ** Financial software firm Ion Group Investment has made a $2.1 billion bid for Britain's Fidessa, potentially gatecrashing a takeover of the London-listed company by Swiss banking