a simple error (hopefully): cannot convert implicity any help appreciated

Here is the error: Assets/UserPlayer.cs(11,26): error CS0029: Cannot implicitly convert type UserPlayer' to Player'

Here is the code: using UnityEngine; using System.Collections;

 public class UserPlayer : MonoBehaviour {
     public Transform FirstPerson;
     public Transform ThirdPerson;
     public Player MyPlayer;
     // Use this for initialization
     void Start () {
         MyPlayer = NetworkManager.Instance.MyPlayer;
         MyPlayer.Manager = this;
         FirstPerson.gameObject.SetActive(false);
         ThirdPerson.gameObject.SetActive(false);
     }
     
     // Update is called once per frame
     void Update () {
     
     }
         [RPC]
     void Server_takeDamage(float Damage)
     {
         networkView.RPC ("Client_takeDamage",RPCMode.Server, Damage);
     }
     
     
     [RPC]
     void Client_takeDamage(float Damage)
     {
         MyPlayer.Health -= Damage;
         
         if(MyPlayer.Health <= 0)
         {
             networkView.RPC ("Die",RPCMode.All);
         }
     }
     
     [RPC]
     void Spawn()
     {
         if(networkView.isMine)
         {
             FirstPerson.gameObject.SetActive(true);
             ThirdPerson.gameObject.SetActive(false);
         }
         else{
             FirstPerson.gameObject.SetActive(false);
             ThirdPerson.gameObject.SetActive(true);
         }
             
     }
     
     
     [RPC]
     void Die()
     {
             FirstPerson.gameObject.SetActive(false);
             ThirdPerson.gameObject.SetActive(false);
     }
 }