The downgrade to Neutral suggests that Citigroup sees limited upside potential or increased risk in Avery Dennison's stock, which could lead to a neutral or slightly negative short-term impact on the stock price. However, the increase in the price target to $214 indicates an improved outlook on the company's value, which could counterbalance the downgrade's effect. The mixed nature of the news (downgrade with a higher price target) may lead to a neutral short-term impact as the market digests both pieces of information.