Tony Mowbray felt Rovers’ attacking play was just as much at fault for the home defeat to Charlton despite more defensive frailties.

Rovers shipped 69 goals last season and conceded from two balls in to their box as the Championship new-boys left 2-1 winners.

Four new signings were included in the starting XI, but Manchester City loanee Tosin Adarabioyo, the sole defensive addition so far, wasn’t involved after only signing on Wednesday.

Mowbray hasn’t ruled out further defensive additions before the transfer window shuts, with all four players who lined up in defence against the Addicks having been with the club for the last two seasons.

“We’ve highlighted it,” Mowbray said of more defensive woes.

“Tosin is in the building. He’s only had one day training and isn’t at the level that he needs to be.

“Hopefully he will have a good week training and we’ll see where he needs to be.

“We’ve identified where we need to improve and are trying to do that in the transfer window.

“We’ll see if we can help that over the next week or so.

“If  we don’t then we have to improve the players we’ve got.

“It’s harsh to say it’s the back four, or his fault and his fault.

“A football team is a football team and you have to work hard in and out of possession.

“I would suggest we lost the game because of our inability to put the right quality in to the box at the right time, just as much as our inability to defend our own box.

“It’s a bit simplistic to say ‘same back four, same results’.

“It runs a bit deeper than that. Let’s keep working.

“We’ve had five new faces, four of them played today. We have to bed them in, keep believing, keep pushing hard and have a good season, one that everyone can enjoy.”

Rovers have until 5pm on Thursday to further strengthen their squad, and the boss added: “We are constantly trying to strengthen the team in every window.

“If the right player comes along and the deal is right and suits us we'll do it.

“There’s a potential for that and if not we will get on.

“I’ve brought Tosin in so that won’t be the back four soon.

“We’ve changed the goalkeeper, we’ve brought in a centre half, we’ve got a new midfield player, the team is moving on, it’s progressing and will hopefully evolve in to a good team in this league.”

Rovers fell behind to Ben Purrington’s goal just before the break but equalised 10 minutes after the break through an own goal.

They were on top as they game ticked in to the final quarter, only for Lyle Taylor to tap home with 14 minutes to play, with Rovers unable to respond as the visitors saw the game out comfortably.

“Ultimately we’re left frustrated” Mowbray added.

“I thought there was some good stuff, domination of the ball, but the frustration was the quality of the ball in to the box, the final pass, the clinical side of the game to score and create chances.

“Our Achilles heel from last year was there.

“The goals in isolation, I might say, but that’s football.

“They came and played five at the back, four in front and one up top and it was difficult.

“It was tough to get through, but no-one says that you can’t come and defend and make life difficult for the home team and they did that.

“We needed better quality when you’re in their half of the pitch, picking the right pass, be more clinical.

“They didn’t have to work hard for their goals, particularly the second one, the nature of getting the corner from a throw-in.

“Then we’ve worked hard on trying to get first contact from set plays and the fact we didn’t, it’s in our net and then the last 20 minutes we had to go chasing.

“We went too long and direct and it didn’t get us the rewards. They managed the game well, slowed it down, so we’re left frustrated with a defeat on the opening day.

“We came away with a defeat because of our inability to deal with a corner.

“At 1-1 there felt like only one winner.

“We were camped around their box, we brought Danny Graham on because of all the balls flying across the box and if anyone knows how to finish those then it’s Danny.”