How To Structure Multiple Relationship On One Entity

I am generating the error:

System.InvalidOperationException
Unable to determine the relationship represented by navigation property 'Quote.QuoteRequest' of type 'ICollection<QuoteRequest>'. Either manually configure the relationship, or ignore this property from the model.

I am certain the reason is I need to have a single entity with two different relationships.

The models relationships are:

Quote

    public ICollection<QuoteRequest> QuoteRequest { get; set; }       public Staff Staff { get; set; }
    public ICollection<QuoteProcedure> QuoteProcedure { get; set; } 
    public ICollection<QuoteToQAss>QuoteToQAss{get;set;} 
    public ICollection<QuoteToQEx> QuoteToQEx { get; set; } 
    public ICollection<QuoteToKitset> QuoteToKitset { get; set; } 
    public ICollection<QuoteToProduct> QuoteToProduct { get; set; } 
   public ICollection<QuoteTasks> QuoteTasks { get; set; } 
   public ICollection<QuoteDetails> QuoteDetails { get; set; } 

   [ForeignKey("myQuoteRequest")] 
   public QuoteRequest QuoteRequests { get; set; }

QuoteRequests:

 public Boolean Quoted { get; set; }

        //public int? QuoteID { get; set; }

        public Client Client { get; set; }

        public Site Site { get; set; }

        public WaterBody WaterBody { get; set; }

        public Quote Quote { get; set; }

        [ForeignKey("aQuoteRequest")]
        [InverseProperty("myQuoteRequest")]
        public ICollection<Quote> Quotes { get; set; }

I thought specifying the foreign key and giving it a different name would work.  But it seems EF doesn't like this approach.

This is not an unusual situation, although not usual either, in a normalised data table, so I would assume it can be done.  What is the correct approach?