British Airways and Iberia owner IAG
IAG last year agreed a 172.5 million pounds deal to buy bmi but last week said it had received a discount for taking on bmi's loss-making low-cost and regional divisions.
Walsh said IAG was in talks with potential buyers but that a sale was far from certain.
I'm not confident
We've made clear from the very beginning that regional and bmibaby don't form part of IAG's plans.
Bmi comprises three underperforming businesses: a traditional airline serving Europe, the Middle East and Africa; bmi regional, serving the UK; and low-cost unit bmibaby.
IAG said bmi's mainline operation would be integrated into British Airways, putting some 1,200 jobs at risk, while bmibaby and regional would be sold off or shut down.
Walsh said prized Heathrow take-off and landing slots that came with the acquisition of bmi would help IAG expand further into the Asian market, but warned that integrating the business into British Airways would take time.
Bmi is a huge loss making company. If you look at the losses that bmi has had, a lot of work is going to need to be done to restructure that business, Walsh said.
($1 = 0.6205 British pounds)
(Editing by Rhys Jones)