How is it possible for a Yisrael to have no relatives?
Rashi and Targum Yonasan: The Pasuk is referring to relatives who do not have the means to redeem the field.
Moshav Zekenim: It means that his relatives do not want to redeem the field. 1
Refer to 25:25:4:1*. Moshav Zekenim: Why is this unlike "Ein la'Ish Go'el" (Bamidbar 5:8)? Bava Kama 109a learns from there that it discusses a convert, who has no relatives! (Perhaps this opinion holds that it is unreasonable to obligate relatives to redeem. That Pasuk discusses returning theft to a relative if the Nigzal died. We cannot say that no relative wants to take it!
What are the implications of "Vehisigah Yado"?
Erchin, 30b: It implies that he has now attained the means to redeem the field
What is the meaning of the word "u'Matza"?
Rashi (in Bamidbar 11:22): It means that he obtains the means (and not that he already has the means to redeem it - to preclude selling a distant field in order to redeem one that is close or selling a poor-quality field in order to redeem a better-quality one. Erchin, 30b). 1
See Torah Temimah, note 124.