A holding register is commonly manually inserted to overcome a structural hazard.
   always @(posedge clk) begin
      pc = !pc;
      if (!pc) holding <= Foo[x];
      if (pc) ans <= holding + Foo[y];
      end
For greater manual control we could express the design using a behavioural style if we are allowed to pause the thread.
   always @(posedge clk) begin
      holding <= Foo[x];
      @(posedge clk) ;
      ans <= holding + Foo[y];
      end
In the future, better to use tools that automatically balance the load on structural components?