Tuchel believes the Ligue 1 leaders needed reinforcements in January regardless of their shock exit from the Coupe de la Ligue.
Thilo Kehrer gave up another penalty -- his fourth since joining in the summer -- as PSG were bounced from the Coupe de la Ligue by lowly Guingamp.
Paris St Germain were knocked out of the Coupe de la Ligue after unfancied Guingamp scored two of the three penalties they were awarded.
Jonathan Johnson PSG correspondent
Parc des Princes for the 1st time in 2019! PSG vs. Guingamp in the Coupe de la Ligue quarterfinals coming up.
Paris Saint-Germain scraped through to the quarterfinals of the Coupe de la Ligue with a win over second division Orleans on Tuesday.
Monaco's Radamel Falcao criticised the VAR system as something that could "kill football" after it twice benefitted PSG on Saturday.
PSG chairman and CEO Nasser Al-Khelaifi has played down speculation linking the French capital outfit with Thomas Tuchel.
PSG won a fifth straight Coupe de la Ligue title, as Kylian Mbappe gave former club Monaco fits in a 3-0 win, writes Jonathan Johnson.
Kylian Mbappe cut his former club to shreds as Paris Saint-Germain beat Monaco 3-0 to win a fifth successive Coupe de la Ligue.
The Coupe de la Ligue represents PSG's first of three domestic trophies up for grabs before the club undergoes significant change this summer.
Monaco boss Leonardo Jardim has publicly ruled himself out of the running to succeed Unai Emery as Paris Saint-Germain coach.
Paris Saint-Germain's Angel Di Maria and Kylian Mbappe have been passed fit to play in Saturday's Coupe de la Ligue final against Monaco.
Before Unai Emery sets his midfield for Real Madrid, he might want to give Lassana Diarra his starting debut in Tuesday's Coupe de France match.
Unsung duo Giovani Lo Celso and Yuri Berchiche stole the headlines vs. Lille, each grabbing a goal and making a claim for a regular starting position.
"Neymar must show more humility towards his fellow players", says Monaco defender Andrea Raggi.
First-half goals from Radamel Falcao sent Monaco back into the League Cup final after a 2-0 home win against Montpellier on Wednesday.
Kylian Mbappe's red card will grab the headlines but more importantly PSG advanced to the Coupe de la Ligue final, thanks in large to Marquinhos.
PSG's Kylian Mbappe admitted he deserved his first career red card after he was dismissed during the French capital outfit's 3-2 win away to Rennes.
Paris Saint-Germain remain on course for a fifth-straight Coupe de la Ligue title after winning 3-2 away to Rennes on Tuesday.
With a Champions League matchup vs. Real Madrid looming, PSG must balance resting players against Rennes and staying strong enough to avoid an upset.
Kylian Mbappe is back in the Paris Saint-Germain squad and could feature in the Coupe de la Ligue semifinal away at Rennes on Tuesday.
A tender will be put out at the start of February to find new provider of goalline technology, league says.
The Edinson Cavani and Javier Pastore drama that has dominated PSG's 2018 so far needs to be solved or consigned to history.
France has suspended the use of goal-line technology in Ligue 1, the Coupe de France and the Coupe de la Ligue, the LFP announced.