Bristol City midfielder Marcus McGuane is been ruled out for the Robins' trip to Coventry City on Saturday with concussion.
Nani joined Manchester United from Portugese side Sporting in June 2007 and went on to play 230 times for the club, scoring 41 goals. Nani's standout campaign with United was 2010-11 when he was named the club's players' player of the year, named in the PFA's Premier League team of the year, and registered a league-high 14 league assists. At international level, Nani scored 23 goals in 112 caps - and won Euro 2016.
Despite their win over Charlton Athletic in the FA Cup third round, Paul Heckingbottom felt his Preston North End side were not at their best.
Walsall sign full-back Elicha Ahui on an 18-month contract with an option of an extra year, but loan him back to Irish club Drogheda.