It would be difficult to access EHCP support and funding based on a child having EAL. This alone does not mean SEN. There would need to be other professional input and evidence, such as SALT and paediatrics. However I have had EAL children who after assessment and time, there’s been clear evidence of SEN. Usually ASD.
Start your assessments with SALT, they will have knowledge of specialists who can assess in child’s own language. Each county usually has supportive agencies for our EAL families too. Maybe your local SEN Dept could advise?