The Swede left the Galaxy in December to join AC Milan, where he has proved a huge hit - even at 38 years of age.
But Lletget isn't a fan, telling the BSI:The Podcast: "There is definitely a better atmosphere around here. In terms of chemistry, it will get better over time.
"You couldn't be free. It was super frustrating. You felt you want to take off your football boots and just get off the pitch.
"It's tough to play against him and tougher to play with him."