The former Manchester United defender has suggested there could be big changes in Van Gaal's attacking lineup over the summer.
Ex-Manchester United favourite Paul McGrath has told Talksport of his belief that Louis van Gaal could be about to make sweeping changes in his attack ahead of next season, starting with two of the club's biggest names.
McGrath has been less than impressed with Falcao's contribution this season, and sees it as a formality that the chance to sign the former Atletico Madrid star will be snubbed this summer.
But McGrath didn't stop there with his predictions on United's strike force for 2015-16, as he stated that Netherlands' record goalscorer Robin van Persie may also find his place in the squad in jeopardy.
"Without a doubt, I think Falcao will be gone," the Republic of Ireland favourite told Talksport.
“Van Persie might be off as well, even with the Dutch connection with Van Gaal."
The former defender did assure fans that Van Gaal's presence would ensure exciting times in the coming seasons though, praising the Dutchman's management and confidence building amongst the squad.
"I think whoever he brings in it's going to be an exciting time for Manchester United," he added. "You have a man there with an ego there bigger than any of the players [Van Gaal], and he can also bring them all together and galvanise them to play for United."
Falcao and Van Persie are two of the highest earners at Old Trafford, and with the Monaco loanee struggling to settle in the Premier League, he has just 4 goals in 23 appearances to his name, it's no surprise to see the club reconsider the big-money clause to sign him permanently this summer.
At 29, Falcao is no spring chicken either, but Van Persie's age - he'll be 32 by the start of next season, is an even more pressing problem. Despite the ex-Arsenal forward's strong goal record since moving to Old Trafford, the injury problems that frustrated much of his earlier years in London have returned to a degree over the last two years.
His contract will expire at the end of next season, and United may be tempted to cash in on the striker while they still can.
Of course, those two departures will leave plenty of room and wages for top class replacements to come in, and with Rooney impressing in an attacking position, it may be that some top young talent will be arriving at Carrington this summer if McGrath's predictions are right.