As per the respective shloka, from Vishnu Sahasranama Stotram:-
व्यासाय विष्णुरूपाय व्यासरूपाय विष्णवे ।
Which means vyasa is vishnu's form and vice-versa.
But If veda-vyasa is a title given to a person, as that person organizes the format of the scriptures, then ashvatthama who's the next veda vyasa will he be considered as vishnu's Incarnation? But how's that possible because Bhagavatam says that the current vyasa is personally a direct and the 17th Incarnation of Vishnu?
As per this shloka
tataḥ saptadaśe jātaḥ satyavatyāṁ parāśarāt cakre veda-taroḥ śākhā dṛṣṭvā puṁso ’lpa-medhasaḥ
Thereafter, in the seventeenth incarnation of Godhead, Śrī Vyāsadeva appeared in the womb of Satyavatī through Parāśara Muni, and he divided the one Veda into several branches and subbranches, seeing that the people in general were less intelligent.
So will Ashvatthama become Vishnu?