Approach2

using UnityEngine;
using Unity.Collections;
using Unity.Jobs;
using UnityEngine.Jobs;
using Unity.Mathematics;

public class BURST2 : MonoBehaviour {

    public struct MoveJob : IJobParallelForTransform {
        [ReadOnly] public NativeArray<float3> positions;
        public float deltaTime;
        [SerializeField] public float3 playerPosition;  // cant provide playerpos, no matter how tried

        public void Execute(int index, TransformAccess transform) {
            var pos = new float3(transform.position.x,transform.position.y,transform.position.z);
            var direction = playerPosition - pos;
            direction = math.normalize(direction);
            pos += direction * positions[index] * deltaTime;
            transform.position = pos;
        }
    }

    private TransformAccessArray m_AccessArray;
    private NativeArray<float3> m_Positions;
    private JobHandle m_MoveJobHandle;
    private float3 m_PlayerPosition;

    private void Awake() {
        m_AccessArray = new TransformAccessArray(0);
        m_Positions = new NativeArray<float3>(0, Allocator.Persistent);
    }

    private void OnDestroy() {
        m_AccessArray.Dispose();
        m_Positions.Dispose();
    }

    public void RegisterEnemy(Transform enemyTransform) {
        m_AccessArray.capacity += 1;
        m_AccessArray.Add(enemyTransform);
        var newPositions = new NativeArray<float3>(m_AccessArray.length, Allocator.Persistent);
        NativeArray<float3>.Copy(m_Positions, newPositions, m_AccessArray.length - 1);
        m_Positions.Dispose();
        m_Positions = newPositions;
    }

    public void SetPlayerPosition(float3 position) {
        m_PlayerPosition = position;
    }

    private void Update() {
        if (m_AccessArray.length > 0) {
            // init job
            var moveJob = new MoveJob() {
                deltaTime = Time.deltaTime,
                positions = m_Positions,
                playerPosition = m_PlayerPosition
            };
            // run job
            m_MoveJobHandle = moveJob.Schedule(m_AccessArray);
            // wait for completion
            m_MoveJobHandle.Complete();
            // Debug.Log the position of the first enemy unit
            Debug.Log(m_AccessArray[0].position);
        }
    }
}