It isn't easy to be positive on the struggling company's prospects.Walgreens Boots Alliance (WBA 15.78%) is shaping up to be one of the least popular stocks of 2024. With its share price down nearly 65% year to date, the pharmacy-chain operator isn't making it on many holiday wish lists.Yet the company still has believers. One of them is TD Cowen analyst Charles Rhyee, who recently reiterated his bullish take on the troubled company. Here's why he thinks Walgreens has a brighter future than many market play ...