Bastian Schweinsteiger
Bastian Schweinsteiger joined Manchester United from Bayern Munich in the summer. (Getty)

Arsenal legend Martin Keown has backed Bastian Schweinsteiger to make a quick impact at Manchester United. The midfielder left Bayern Munich after 17 years and made a switch to Old Trafford in the summer.

The 31-year-old's move to England saw the Red Devils spend €9m (£6.5m, $10.5m) for his services, according to his former club TSV 1860 Rosenheim. So far he has made six appearances in all competitions, which include two starts in the league.

Schweinsteiger has already won every club competition with his former club Bayern. He also won the world cup with Germany in 2014. Keown believes the star midfielder can go on to become a top signing for Louis van Gaal's side this season.

"I think Bastian Schweinsteiger was magnificent for Germany against Scotland and could have a big impact. He is already a top player and could turn out to be a fantastic signing for United. He has a real hallmark of quality about him and can run games from midfield. He may not be a long-term solution but he could be a top signing," Keown told the Daily Mail.

Anthony Martial arrives

Meanwhile, Anthony Martial arrived at Old Trafford from AS Monaco on deadline day. The French international is yet to make his debut for his new club and is in contention to face Liverpool on 12 September.

The 19-year-old is compared to another Arsenal legend and dubbed to be the new Thierry Henry. Keown claims Martial needs at least a year to settle in England before he starts to showcase his talent for United.

"When Thierry Henry came to Arsenal he arrived with more promise than Martial and became one of the league's greatest ever players. It still took him more than a year to settle in to life in England," the former Arsenal defender explained.

"He was slightly older and had suffered a bit of a disappointment at Juventus so Arsenal had to turn him round and that took time. Even Dennis Bergkamp took a year to settle in properly so it really can depend from player to player.

"It's still uncertain where Martial will play in the United system and who he might replace. If he plays on the left, that's Memphis' spot and if it's through the middle that's where Rooney plays. He could come in for Juan Mata but wherever he plays it will be interesting to see how Van Gaal fits him into his master plan," Keown concluded.