Ice and gentle stretch of the subscapularis. Utilize any soft tissue modality and manual method that would release myofascial adhesions around the nerve sheaths. Ultrasound or Cold laser is beneficial to increase circulation to the biceps tendon, and for fibrosis reduction and contracture release. Wet heat and stretch for pectoralis muscle and coracobrachialis as modalities cannot be used over the chest region.

Recommended courses for reference:  

Soft Tissue Injury 103: Comprehensive Introduction to Soft tissue Injury and Treatment

Soft Tissue Injury 114: Deep Tissue and Muscle Fascial Release

Soft Tissue Injury 115: Active Myofascial Rehabilitation

Soft Tissue Injury 120: Modalities - Theories, Application and Treatment

Soft Tissue Injury 121: Posture; Normal Biomechanics, Pathology and Treatment for Scoliosis and Spinal Distortion Syndromes.