Ordered that the order is modified, on the law, by deleting the provision thereof directing that the judgment of divorce and stipulation of settlement shall be modified such that physical custody of the parties' child shall be transferred to the father in the event the mother relocates to Westport, Connecticut; as so modified, the order is affirmed insofar as appealed from, with costs to the father payable by the mother.
The record contains a sound and substantial basis for the trial court's determination denying the mother's petition to relocate with the child to Westport Connecticut ( see Matter of Tropea v. Tropea, 87 NY2d 727, 739; Eschbach v. Eschbach, 56 NY2d 167, 174; Matter of McDonald v. Minor, 267 AD2d 240). The evidence failed to demonstrate that a relocation to Westport, Connecticut, was in the best interests of the child ( see Kasal v. Kasal, 297 AD2d 624, 626).
We disagree, however, with the Family Court's direction that "[in] the event the mother relocates to Westport, Connecticut, then [physical] custody of the child . . . shall belong with the father, forthwith." This direction, while possibly never taking effect, impermissibly purports to alter the parties' custodial arrangement automatically upon the happening of a specified future event without taking into account the child's best interests at that time ( see Rybicki v. Rybicki, 176 AD2d 867, 871; see also Matter of Rhubart v. Rhubart, 15 AD3d 936; Matter of Carter v. Kratzenberg, 209 AD2d 990, 991).
The mother's remaining contentions are without merit.