Shares of AstraZeneca have risen 7% this week once news that Pfizer is interested in acquiring the drug maker after an abortive $118 billion try at a takeover back in May. Though deal talks could start as soon as next week, some people aren’t expecting it to happen anytime soon. Dan Mahony, a fund manager at Polar Capital said, “I’m not expecting anything next week. I know the stock is rallying on anticipation but I suspect if anything is going to happen it is more likely to happen in November or December.”