Goodman Fielder is expected to report this week weaker first half profits as speculation grows about its planned strategic review of its business operations. Reports suggest that Australia's biggest food firm will launch a takeover bid for Snack Foods Ltd , hold a 10% share buyback or go private through a leveraged A$2.3bn buyout led by chief executive David Hearn. The company said last week that it remains in 'active discussions' on matters including its shape, strategy, and financial and capital structure.