Two goals in the last 15 minutes were enough for Crystal Palace to overcome Ipswich Town and progress into the third round of the Carabao Cup.

Despite conceding in injury time, courtesy of midfielder Bersant Celina, a James McArthur brace helped Frank de Boer's side secure victory at Selhurst Park.

Here are five things we learned...

Three-man midfield dynamism should not be a one-off

It became clear as time elapsed that there was unrestricted freedom about the instructions given by De Boer to his players, given that Yohan Cabaye operated as an auxiliary forward as much as he did a deeper-lying playmaker and even a third centre-half at one point.

More notably, he would hold the fort as Jason Puncheon and McArthur laid siege on the Ipswich rearguard with ambitious forward runs to support the fledgling forwards, Jason Lokilo and Sullay Kaikai.

While McArthur is yet to recuperate fully after his pre-season setback, if the midfielder, Ruben Loftus-Cheek and Cabaye can replicate some of what was on show against Ipswich then it could produce an unpredictable, yet dynamic, midfield.

De Boer must take advantage of set-pieces to add another weapon to his team's arsenal

Take it with a pinch of salt, but the Eagles must harness the potential to be a threat from set-pieces.

Palace had 10 corners, now totalling to 14 since the opening day defeat to Huddersfield Town, and failed to score from all of them.

Indeed, Palace were average from dead-ball situations and were not ranked inside the top five last season. However, to win that many opportunities and still not be clinical is worrying. That said, it is still early doors.

McArthur is closer than we think

The 29-year-old midfielder netted twice to help send Palace through - that's not something that happens often when you're not close to returning.

With Cabaye or Puncheon in support, he was a significant threat from deep, with darting runs into the box that troubled the Ipswich defence.

Once De Boer finds out the best combination this season for his midfield, in supplement with his attack, then it can produce something special.

Give the young lads more chances

Most Premier League teams do not tend to give youngsters enough chances to prove themselves.

While there are notable examples, a common narrative is that the players breaking onto the scene will feature in the side for a while, hoping for more opportunities, before being shipped out on loan.

Whether they return to a more complete and experienced player to the same team is anyone's guess after that.

Neither Lokilo or Kaikai produced world-beating performances, and in fact the latter's inaccurate shooting was particularly frustrating, however the samples they gave warranted further looks.

Time and time again, Lokilo hopped, skipped and stepped past his markers, but it was his finishing touch which let him down. If he gets more look-ins, who knows what might happen.

Lokilo looks good

In the first half, he was average and performed as most would expect a 19-year-old to who is still finding their feet in a Premier League club - of any stature that is.

However, when Andros Townsend and Lee Chung-Yong were introduced, he became more comfortable and in rhythm with the Palace attack as they forced a breakthrough with an increasing number of forward players.

Had he netted one of his two chances on goal then he would have been given even bigger praise. That said, what he did for 90 minutes was still a relatively fine showing.