Hi,
Since both the Father and the Son have brought another Property (I assume it is a House. Otherwise the benefit of Section 54/54F as the case may be won't be applicable), the basic condition prescribed by Section 54/54F is fulfilled.
The condition differs when the original asset sold was a House used for Residence (Section 54) or property other than Residential House (Section 54F).
There is no restriction on transfer of the new house purchased as per Section 54. However Section 54F restricts buying/construction of a another House other than the new House Purchased or Transferring the New House so purchased. I cannot answer the question fully as the facts are not sufficient.
Also, in case the assessees want to gift the house to the Son's wife, why make 2 Gift Deeds and pay additional Stamp Duty and Registration Fees twice? Both the father and son can Gift the entire property to her via a single Gift Deed as she is the Daughter-in-law of the Father and the Wife of the Son.