The midfielder joined the Gunners from FC Basel earlier in the transfer window.
The midfielder was secured in a deal from Swiss side Basel earlier in the transfer window, and looks set to be their only major capture during January.
There is excitement over his signature, with many Gunners fans hoping he can come in and be a long-term replacement for Mathieu Flamini in the side.
It is yet to be seen how he will fit into Arsenal’s system though, but Wenger has no fears over that, explaining why he thinks the Egyptian will slot right into his current side’s style.
“He’s not a powerhouse, he's more of a mobility player. That’s why I think he can suit our game,” he told Arsenal.com.
“He’s 23 years old, he played for three years in Basel, won three championships in Switzerland, played against English teams like Chelsea, Manchester United and Liverpool.
“The next step is a big one for him because to come out of Switzerland and get to the Premier League is not easy but it’s the right age for him.”
Wenger will now be hoping that Elneny can have some sort of impact upon his side in the second half of the campaign.
A big advantage his arrival will have is that it will allow Wenger to bring back Francis Coquelin slowly rather than rushing him back from his long-term injury.
That could be a blessing in disguise, with the Gunners sure to need the Frenchman as they eye the title come the end of the season.