Dimitar Berbatov believes Manchester United need two defensive signings as well as Jadon Sancho in this summer's transfer window.
The former United striker has named right-back and centre-back as two areas Ole Gunnar Solskjaer should look to improve in if he is to build on a promising campaign.
United have made Borussia Dortmund winger Sancho their top priority this summer, with negotiations continuing between the two clubs. MEN Sport understands United are considering another attacking midfield signing and a left-sided centre-back.
But Berbatov has his own transfer advice for Solskjaer as he highlighted in his Betfair blog what United need to mount a Premier League title challenge.
"They need a centre-back, maybe a right back also as Aaron Wan-Bissaka is the only option at the moment," said the Bulgarian.
"It looks like Alexis Sanchez might stay at Inter permanently, which would make room for Jadon Sancho to go to United from Dortmund, and it would be a very interesting transfer.
"Every season is different and has its unique ups and downs, the teams you expect don't always end up doing well, but with United you always expect them to be title contenders, especially if they make some signings."
Berbatov also has a slight worry over the addition of Sancho, concerned that it could mean that talented teenager Mason Greenwood misses out on first team football.
He added: "Who, out of Marcus Rashford, Mason Greenwood or Anthony Martial, makes way for Sancho?
"If they get the England man and the defenders, they can improve to a higher level.
"I don't want to see Greenwood dropped at this point while he develops, he could be very special and has earned his chance to shine next season."
