Booing might annoy Twatbeard, but I think what will really hurt is an excessive love fest with Sir Rickie. That's where my singing will be directed. Telling the loveable mush how great he is. Knowing that Adam will be sat there thinking... "I was there during the promotions and the success. I thanked the fans and took out an expensive advert to do so. Why don't they love me? Why don't they love me?"
Your approach will work right up to the point where Lallana commits a foul or goes over after being tackled. Then the volume will go up. It's a guarantee if he plays. It's almost going to be embarrassing.