14month old cockerjack male

We have a lovely cockerjack Max looking for a new forever home, Max did not have the best start to life, when he came to live with us he was severely under weight and it appeared he lacked socialisation with other dogs.
Max has had a lot of care and is very healthy, up to date with all vaccinations and also neutered. He has been attending dog training sessions and socialisation. He has made great progress,
However, he does present with anxious hyperactivity and although he is an anxious mess at times with more than a few persons he is incredibly loving (loves a cuddle in the evening on sofa). He loves to play and run about free. He is not aggressive towards people or animals. We would prefer Max to go to someone who has some knowledge and patience on the support/ training he needs and the space to allow him to run about.
He has always slept in cage or sofa at night. He does not bark excessively.
He does know his basic commands and is fully toilet trained.
Pls note - Max is intolerant to beef and had problems with can food. He is currently fed raw turkey and kibble and Is very content and happy with this.
Neutered. Up to date with worm and flea treatment.