According to Diario Sport, Barcelona have put centre-back Clement Lenglet up for sale this summer.
Lenglet enjoyed a fine start to his Barcelona career after joining from Sevilla but has fallen down the pecking order at Barcelona.
Portuguese champions Porto are interested in signing the French centre-back as they see him as the ideal replacement for Chancel Mbemba, who looks set to leave the Portuguese outfit when his contract expires at the end of this month.
Super-agent Jorge Mendes has reportedly communicated to Barcelona that Porto are interested in signing Lenglet.
However, it is believed Porto want a loan move for Lenglet rather than a permanent deal.