Mikel Arteta admits his Arsenal side will need to 'massively improve' if they are to progress in the Europa League after the 2-2 draw with Sporting Lisbon.

The Gunners boss made six changes to his starting line-up for the last-16 Europa League tie, with a debut for Polish defender Jakub Kiwior and Gabriel Martinelli deployed down the middle in the absence of Eddie Nketiah, Leandro Trossard and Gabriel Jesus.

Those changes looked to have paid off when William Saliba put Arsenal into an early lead, but the Premier League leaders were pegged back before the break and would go on to play out a 2-2 draw in Portugal to take back to the Emirates.

After the game, Arteta warned his players that his side need to stop conceding goals and will need to up their game if they are to make it through to the next round.

'It's true that it's something that we must improve massively if we want to keep winning games.' The Spaniard told BT Sport.

Ten Hag admits he's 'grateful' for Man Utd's win over Betis after 7-0 disaste

Erik ten Hag said he was 'grateful' after Manchester United showed their character as they bounced back from their annihilation at Anfield with a 4-1 win at home to Real Betis in the first leg of their Europa League last-16 tie.

The hosts, hammered 7-0 by Liverpool on Sunday, made the ideal start as Marcus Rashford's goal gave them an early lead, but it was cancelled out by Ayoze Perez's leveller.

However, second-half goals from Antony, Bruno Fernandes and Wout Weghorst completed an emphatic win to put United in a strong position to reach the quarter-finals

Afterwards Ten Hag said: 'I think we played a very good game. Both halves.

'I think at half-time maybe we should have been up by 3-0, then it's 1-1, one mistake and we get punished for it, but I think we played well.

'The second half especially, good goals and a good performance I think, so we gave something to the defence and they gave us something back as well because we were behind.

'So very grateful after Sunday.'

The Dutchman was also pleased with the performances of Weghorst and Fernandes.

He added: 'Weghorst was so close so many times already and he created so many chances and goals for all of us. Now he has a goal and deserves it.

'Bruno he was brilliant today. He led the team from the 1st minute, in possession, assist, scored a goal so I'm happy.'