Manchester United are keeping tabs on Juventus winger Douglas Costa as they embark on their summer transfer business.

The 29-year-old Brazilian, who had previous spells at Shakhtar Donetsk and Bayern Munich, has been at Juventus for three years.

It is understood Manchester United's recruitment team have been closely following Costa's progress this season as they seek to sign a wide player in the coming weeks.

While Jadon Sancho remains their No 1 target for that position, should that deal not come off, Costa is among the alternatives being considered by the club.

Ole Gunnar Solskjaer is targeting better squad depth to deal with another long season after Manchester United's Europa League exit to Sevilla, which he called "disappointing".

"They [the players] need to keep improving, keep doing what they've done every single day and they've worked so hard, with the right attitude and mentality," he said.

"We need to strengthen the squad depth because it's going to be a long season. We're going to keep pushing and keep demanding more of the players that we have, but still, we're looking to improve and it's a strange one. The league starts very quickly, but then the [transfer] market is open for so long. So we've got to be both good, smart and clever.

"It's only going to be a couple of weeks rest until we get going again. We have to dust ourselves down, make sure that we are ready and fresh to go."