Modèle de lettre-type (anglais) - Lettre de recommandation en faveur d'un collaborateur

Dear [Mr or Mrs or Sirs], I write to introduce you to [nom et fonction], who has been my collaborator for now ten years. He is [compétence et qualités], and has [expérience]. He is currently available and will contact you in the near future. Thinking that his competences might be of help to you, I took the liberty of suggesting him to get in touch with you. I trust you will find it worthwhile to meet him. Yours sincerely [votre nom] [votre fonction]