MILAN, Dec 15 (Reuters) - Qatar's sovereign wealth fund is still mulling whether to invest in Monte dei Paschi di Siena's 5-billion euros capital raise, a source close to the matter said. Qatar Investment Authority
could put 1 billion euros in the cash call, sources have said. But it has not made a decision yet, the source said.
"Qatar is still at the window," the source added.
The source also said that Mediobanca , JPMorgan , Credit Suisse and HSBC had arranged a 4.7 billion euro bridge loan for the Tuscan bank's planned bad loan sale.
(Reporting by Paola Arosio, writing by Silvia Aloisi) ((firstname.lastname@example.org; +39 02 6612 9723; Reuters Messaging: email@example.com))