Manager Jos Luhukay believes new Owls recruits Michael Hector and Josh Onomah will give the Championship club "extra quality" over the coming months.
Wednesday swooped to sign Chelsea centre-back Hector and Tottenham midfielder Onomah on season-long loan deals on Friday.
The duo were ineligible to play in the Owls' 2-1 triumph at Reading on Saturday.
But Luhukay has backed Hector and Onomah to flourish at Hillsborough.
"It is a positive situation for our club that we have signed these two players," he said. "We hope these players give us extra quality.
"It is very important you have competition in positions. It brings a high level in the team and spirit. You know you can't rest as a colleague could take the position.
"We hope these players give us more possibilities and hopefully they will help us."
The Dutchman confirmed Wednesday had been tracking Onomah for several weeks.
Luhukay said: "We have studied Josh a lot in the last few weeks and we feel he can be a very good player for us. He's 21 and an England Under-21 international.
"He played 37 games for Aston Villa last season. Villa had a strong team and played in the Championship Play-Off Final."
While Onomah, who is on duty with the England U21 squad in the forthcoming international break, spent last term at Villa, Hector made 38 appearances in a temporary stint with Hull City. The move to the Owls is the 15th loan spell of Hector's career and he has not played a first-team match for Chelsea since joining for £4m in 2015 from Reading.
"Michael Hector is an experienced player," said Luhukay. "He's 26 and had a lot of clubs.
"Last year, we saw him play more times for Hull. He is good from set pieces and comfortable on the ball."
Luhukay intends to give his players a couple of days off to rest and recuperate following a hectic schedule.
"The players must now rest because we have had a lot of games very close together," he said. “This is not so good for recovery but they have gone out there and done what has been asked of them."